Short-Term Stationary Operations
(PATA 100 Series)

PATA 101 (Old PATA 5)
Work Space On OR Beyond The Shoulder
(No Roadway Encroachent)

  1. The shadow vehicle and traffic control devices are not required if the work space is outside the highway right-of-way, behind barrier, more than 2' behind curb, or 15' or more from the edge of any roadway.
  2. For operations of 60 minutes or less, all traffic control devices may be eliminated if a shadow vehicle is present.
  3. For divided highways and one-way highways where it is physically possible, advance warning signs should also be placed on the left-hand side of the roadway.
  4. When a shadow vehicle is not used, distance A is measured from the Road Work (W20-1) sign location to beginning of work space.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 102 (Old PATA 7)
Work Space On OR Beyond The Shoulder
(Minor Roadway Encroachent)

  1. If the work space is completely within a parking lane and parking is present, the taper or shadow vehicle is not required.
  2. For operations of 15 minutes or less:
    1. The Road Work (W20-1) sign is not required.
    2. All channelizing devices may be eliminated if a shadow vehicle is present.
  3. For divided highways and one-way highways where it is physically possible, advance warning signs should also be placed on the left-hand side of the roadway.
  4. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 103 (Old PATA 8)
Work Space Has A Major Encroachent On The Roadway

  1. Right Reverse Curve (W1-4R) sign shall only be used when lane shifts onto shoulder.
  2. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  3. Refer to PATA 008 for reverse curve/turn signing

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 104 (Old PATA 9a S)
Work Space In Center Of Roadway

  1. Right Reverse Curve (W1-4R) sign shall only be used when lane shifts onto shoulder.
  2. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  3. Refer to PATA 008 for reverse curve/turn signing

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 105 (Old PATA 9b)
Work Space In Center of Intersection

  1. Left turns may be prohibited as required by geometric conditions. When the No Left Turn (R3-2) sign is used on undivided streets, one sign should be placed at the near right-hand corner and one at the far left-hand corner. On divided streets the No Left Turn (R3-2) sign should be placed on both the near side and the far side ends of the medians. Refer to Publication 236 for additional guidance.
  2. Right Reverse Curve (W1-4R) sign shall only be used when lane shifts onto shoulder.
  3. Refer to PATA 008 for reverse curve/turn signing

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 106 (Old PATA 9c)
Work Along Roadway Centerline

  1. Place 50' taper in closed lane as shown. Continue taper angle and spacing as needed on the opposite side of the roadway centerline while maintaining a 10' minimum lane width for traffic.
  2. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers.
  3. The buffer space shall be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
  4. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 107 (Old PATA 10a)
Work In One Lane; Two Flaggers

  1. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers.
  2. For operations of 15 minutes or less:
    1. The Road Work (W20-1), One Lane Road (W20-4), and Flagger Symbol (W20-7) signs are not required.
    2. All channelizing devices may be eliminated if a shadow vehicle is present.
  3. The buffer space shall be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
  4. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 108 (Old PATA 10c)
Single Flagger

  1. This drawing applies when all of the following conditions are satisfied:
    1. Roadway is two-lane, two-way.
    2. Sight distance between the flagger and any vehicle between Points X and Y will be unobstructed.
    3. The ADT is not greater than approximately 1500
  2. The flagger shall be clearly visible to traffic for a minimum distance of E.
  3. For operations of 15 minutes or less:
    1. The Road Work (W20-1), One Lane Road (W20-4), and Flagger Symbol (W20-7) signs are not required.
    2. All channelizing devices may be eliminated if a shadow vehicle is present.
  4. The buffer space shall be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
  5. When a shadow vehicle is not used, 50' is measured from end of taper to beginning of work space.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 109 (New PATA)
Three-Leg Intersection Flagging

  1. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers.
  2. For operations of 15 minutes or less:
    1. The Road Work (W20-1), One Lane Road (W20-4), Be Prepared To Stop (W3-4), and Flagger Symbol (W20-7) signs are not required.
    2. All channelizing devices may be eliminated if a shadow vehicle is present.
  3. The buffer space shall be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
  4. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 110 (Old PATA 10b)
Four-Leg Intersection Flagging

  1. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers.
  2. For operations of 15 minutes or less:
    1. The Road Work (W20-1), One Lane Road (W20-4), Be Prepared To Stop (W3-4), and Flagger Symbol (W20-7) signs are not required.
    2. All channelizing devices may be eliminated if a shadow vehicle is present
  3. The buffer space shall be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
  4. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 111 (Old PATA 10d)
Self-Regulating Stop Sign-Controlled Lane Closure

  1. This figure applies when all of the following conditions are satisfied:
    1. Sight distance between the Stop (R1-1) signs is unobstructed.
    2. The ADT is not greater than approximately 1500
  2. The Stop (R1-1) sign shall be clearly visible to traffic for a minimum distance of E.
  3. Attach red Type B flashing lights on stop signs as shown.
  4. When a shadow vehicle is not used, 50' is measured from end of taper to beginning of work space.
  5. Refer to PATA 008 for reverse curve/turn signing.
  6. Refer to PATA 010 for additional information regarding the temporary portable sign posts for the Stop (R1-1) signs.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 112 (Old PATA 10AFAD-1)
Flagger On Closed Lane Approach, AFAD At The Other End)

  1. The flagger and Automated Flagger Assistance Device (AFAD) shall be clearly visible to traffic for a minimum distance of E. The flagger must be able to see the AFAD and approaching traffic.
  2. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  3. Refer to PATA 008 for reverse curve/turn signing.
  4. Refer to PATA 010 for additional information regarding the temporary portable sign posts for the Stop Here On Red (R10-6AL) signs.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 113 (Old PATA 10AFAD-1)
AFAD On Closed Lane Approach, Flagger At The Other End

  1. The flagger and Automated Flagger Assistance Device (AFAD) shall be clearly visible to traffic for a minimum distance of E. The flagger must be able to see the AFAD and approaching traffic.
  2. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  3. Refer to PATA 010 for additional information regarding the temporary portable sign posts for the Stop Here On Red (R10-6AL) signs.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 114 (Old PATA 10AFAD-2)
AFAD With Operator At Both Ends

  1. Each Automated Flagger Assistance Device (AFAD) shall be clearly visible to traffic for a minimum distance of E. The flagger must be able to see the AFAD and approaching traffic and shall be in constant communication with all other flaggers.
  2. The buffer space shall be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
  3. While operating the AFAD, a flagger should position themselves beside the AFAD and away from traffic so not to block an escape route.
  4. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  5. Refer to PATA 010 for additional information regarding the temporary portable sign posts for the Stop Here On Red (R10-6AL) signs.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 115 (Old PATA 10AFAD-3)
AFAD AT Both Ends, Single Operator Centrally Located

  1. Each Automated Flagger Assistance Device (AFAD) shall be clearly visible to traffic for a minimum distance of E. The flagger must be able to see both AFAD and approaching traffic.
  2. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  3. Refer to PATA 008 for reverse curve/turn signing.
  4. Refer to PATA 010 for additional information regarding the temporary portable sign posts for the Stop Here On Red (R10-6AL) signs.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 116 (Old PATA 11e)
Road Closure With Detour

  1. This figure applies for stationary operations where it is not feasible to maintain alternate one direction traffic flow.
  2. This setup is to be used during daylight hours only and only on roadways with an ADT of 1500 or less. The PATA may be approved by the District Traffic Engineer for use on other roads.
  3. Hours of work should not interfere with rush hour (6:00-9:00 AM and 3:00-6:00 PM) or school bus schedules and the work site must be capable of accommodating emergency vehicles with as little delay as possible.
  4. At locations where there are overlapping detours or several detours within the same area, street names may be added to the M4-9 series signs, or signs with different colored arrows may be used to designate different detour routes. The design and application of signs displaying colored arrows shall comply with PennDOT Publication 236.
  5. The Road Closed-Local Traffic Only (R11-3A) sign may be used in place of the Road Closed To Thru Traffic (R11-4) sign.
  6. This Street To Be Closed For Maintenance Next Week (W23-101) signs should be installed for scheduled work. Install the signs at most appropriate locations.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 117 (New PATA)
Flagging With Pilot Vehicle

  1. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers. Additional flaggers are required to control traffic from side road intersections that exist between Flaggers.
  2. A Pilot Vehicle with an activated flashing or revolving yellow light shall be used at all times to lead stopped vehicles through the work zone.
  3. This PATA applies to roads with an ADT of 5000 or less. The PATA may be approved by the District Traffic Engineer for use on other roads.
  4. The Turning Vehicles - Wait For Pilot Car (G20-4-1) sign is authorized for use on side road approaches. When used, the sign shall be positioned in the vicinity of the stop sign, or if none, immediately in advance of the intersection and facing the traffic on the side road.
  5. The buffer space shall be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
  6. Longitudinal channelizing devices are optional.
  7. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 118 (Old PATA 13a)
Work Space In The Single-Lane Approach)

  1. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  2. Refer to PATA 008 for reverse curve/turn signing.
  3. Refer to PATA 012 for arrow panel sizing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 119 (Old PATA 13b)
Work Space In Both Lanes Of The Two-Lane Approach

  1. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers.
  2. The buffer space shall be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
  3. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  4. If shadow vehicles are used, use two as shown on the PATA drawing.
  5. Refer to PATA 012 for arrow panel sizing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 120 (Old PATA 13c)
Work Space In One-Lane Approach And Left Lane Of Two-Lane Approach

  1. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers.
  2. The buffer space shall be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
  3. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  4. If shadow vehicles are used, use two as shown on the PATA drawing.
  5. Refer to PATA 012 for arrow panel sizing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 121 (Old PATA 14)
Single Lane Closure; Traffic Shifted Into Two-Way Left Turn Lane

  1. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  2. Refer to PATA 008 for reverse curve/turn signing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 122 (Old PATA 15)
Work Space In The Two-Way Left Turn Lane

  1. For operations of 15 minutes of less:
    1. The Road Work (W20-1) and Center Lane Closed (W9-3) signs are not required.
    2. All channelizing devices may be eliminated if both shadow vehicles are present
  2. When shadow vehicles are not used, distance E is measured from end of taper to beginning of work space.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 123 (New PATA)
Work Space In Two Adjacent Lanes

  1. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers.
  2. The buffer space shall be extended so that the two-way traffic taper is placed before a horizontal (or crest vertical) curve to provide adequate sight distance for the flagger and a queue of stopped vehicles.
  3. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  4. If shadow vehicles are used, use two as shown on the PATA drawing.
  5. Refer to PATA 012 for arrow panel sizing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 124 (Old PATA 16)
Work Space In The Left Or Right Lane Of A Two-Lane Approach

  1. For right lane closures, the Right Lane Ends (W4-2R) sign shall be used instead of the Left Lane Ends(W4-2L) sign and the Right Lane Closed (W20-5R) sign shall be used instead of the Left Lane Closed (W20-5L) sign.
  2. For right lane closure, signs in the opposite direction are not required.
  3. For operations of 15 minutes or less:
    1. The Road Work (W20-1), Lane Closed (W20-5L or W20-5R), and Lane Ends (W4-2L or W4-2R) signs are not required.
    2. All channelizing devices may be eliminated if shadow vehicles are present. A second shadow vehicle (equipped with a flashing arrow panel) shall be located where the trailer-mounted flashing arrow panel is shown on this PATA drawings.
  4. For operations of 60 minutes or less in duration, the Road Work (W20-1) sign in the opposite direction of travel is not required.
  5. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  6. Refer to PATA 012 for arrow panel sizing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 125 (Old PATA 17)
Work Space Requiring Closure Of One Side Of A Four-Lane Undivided Highway

  1. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  2. If shadow vehicles are used, use two as shown on the PATA drawing.
  3. Refer to PATA 008 for reverse curve/turn signing.
  4. Refer to PATA 012 for arrow panel sizing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 126 (Old PATA 18)
Work Space In The Left Or Right Lane

  1. For left lane closures, the Left Lane Closed (W20-5L) sign shall be used instead of the Right Lane Closed (W20-5R) sign and the Left Lane Ends (W4-2L) sign shall be used instead of the Right Lane Ends (W4-2R) sign.
  2. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  3. Refer to PATA 012 for arrow panel sizing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 127 (Old PATA 20)
Work Space In The Two Adjacent Lanes

  1. For two left lane closures, the Left Two Lanes Closed (W20-5AL) sign shall be used instead of the Right Two Lanes Closed (W20-5AR) sign and the Left Lane Ends (W4-2L) sign shall be used instead of the Right Lane Ends (W4-2R) sign.
  2. Placement of two consecutive Two Lanes Closed (W20-5AL or W20-5AR) signs is required for all roads with a speed limit of 45 MPH or greater and is optional for roadways with a speed limit of 40 MPH or less.
  3. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work space.
  4. If shadow vehicles are used, use two as shown on the PATA drawing.
  5. Refer to PATA 012 for arrow panel sizing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 128 (Old PATA 40)
Sidewalk Closure; Pedestrian Detour

  1. When crosswalks or other pedestrian facilities are closed or relocated, temporary facilities shall be detectable and shall include accessibility features consistent with the features present in the existing pedestrian facility.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 129 (Old PATA 40)
Sidewalk Closure; Pedestrian Detour

  1. When crosswalks or other pedestrian facilities are closed or relocated, temporary facilities shall be detectable and shall include accessibility features consistent with the features present in the existing pedestrian facility.
  2. Use channelizing devices to separate and maintain temporary pedestrian walkway while sidewalk is closed. Where high speeds are anticipated, a temporary traffic barrier with appropriate end treatments should be used to separate the temporary walkways from vehicular traffic.
  3. Other devices, such as lane closure signing or Road Narrows (W5-1) signs, may be used to control vehicular traffic.
  4. When it is not possible to maintain a minimum width of 60" throughout the entire length of the pedestrian pathway, a 60"x60" passing space should be provided at least every 200' to allow individuals in wheelchairs to pass. A minimum 48" wide accessible path shall be maintained for the length of sidewalk diversion.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 130 (Old PATA 41)
Sidewalk And Crosswalk Closure; Pedestrian Detour

  1. When crosswalks or other pedestrian facilities are closed or relocated and there is not an alternate marked crossing within 300', an engineering and traffic study is required to determine the appropriate location of a temporary pedestrian crossing. PennDOT approval shall be obtained prior to installing a midblock crosswalk. Every temporary crossing shall be detectable and include accessibility features (curb ramps, landing areas, etc.) consistent with the features present in the existing pedestrian facility.
  2. Parking is not permitted within 75' of a midblock crosswalk, unless a 6' to 8' curb extension is in place to improve pedestrian visibility.
  3. Pedestrian traffic signal displays controlling closed crosswalks shall be covered and deactivated.
  4. The width of the existing pedestrian facility should be provided for the temporary facility if practical. Traffic control devices and other construction materials and features should not intrude into the usable width of the sidewalk, temporary pathway or other pedestrian facility. When it is not possible to maintain a minimum width of 60" throughout the entire length of the pedestrian pathway, a 60"x60" passing space should be provided at least every 200' to allow individuals in wheelchairs to pass.
  5. Any approved channelizing devices may be used for closing the sidewalk.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 131 (New PATA)
Work Space On One Quadrant Of A Roundabout Or Traffic Circle

  1. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers.
  2. This PATA shall be used when the work space prohibits traffic from making a complete circle in a roundabout or traffic circle. It is applicable to every roundabout or traffic circle regardless of the number of roadways entering or exiting the roundabout or traffic circle.
  3. Traffic must be controlled from all approaches prior to commencement of work.
  4. Flaggers must control traffic flow so that vehicles from only one approach are permitted to utilize the roundabout or traffic circle at a time. Traffic from all other approaches must be held until traffic is cleared from the work zone. The desired traffic flow is depicted on the PATA with a distinct color line for each approach. Flaggers on site must work as a team to create the most safe and efficient traffic flow.
  5. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 132 (New PATA)
Work Space On One Entrance Of A Roundabout Or Traffic Circle

  1. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers.
  2. This PATA shall be used when the work space prohibits traffic from making a complete circle in a roundabout or traffic circle. It is applicable to every roundabout or traffic circle regardless of the number of roadways entering or exiting the roundabout or traffic circle.
  3. Traffic must be controlled from all approaches prior to commencement of work.
  4. Flaggers must control traffic flow so that vehicles from only one approach are permitted to utilize the roundabout or traffic circle at a time. Traffic from all other approaches must be held until traffic is cleared from the work zone. The desired traffic flow is depicted on the PATA with a distinct color line for each approach. Flaggers on site must work as a team to create the most safe and efficient traffic flow. 5. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

PATA 133 (New PATA)
Work Space On One Exit Of A Roundabout Or Traffic Circle

  1. Each flagger shall be clearly visible to traffic for a minimum distance of E and shall be in constant communication with all other flaggers.
  2. This PATA shall be used when the work space prohibits traffic from making a complete circle in a roundabout or traffic circle. It is applicable to every roundabout or traffic circle regardless of the number of roadways entering or exiting the roundabout or traffic circle.
  3. Traffic must be controlled from all approaches prior to commencement of work.
  4. Flaggers must control traffic flow so that vehicles from only one approach are permitted to utilize the roundabout or traffic circle at a time. Traffic from all other approaches must be held until traffic is cleared from the work zone. The desired traffic flow is depicted on the PATA with a distinct color line for each approach. Flaggers on site must work as a team to create the most safe and efficient traffic flow.
  5. When a shadow vehicle is not used, distance E is measured from end of taper to beginning of work.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Urban 35 MPH or Less 100 100 100 100
Urban Greater than 35MPH 350 350 350 350
Rural 500 500 500 500

When multiple distance plaques are used on advance warning signs, they shall all be of the same series type.

Example: either all "AHEAD" or XXX FEET.

Taper Length Formulas

S L
40MPH or Less L = WS2/60
45MPH or More L = WS

S = regulatory speed limit
W = Width of offset
L = Length

Distance and Spacing Quick Reference Chart

Speed W L 1/2 L 1/3 L Min. Channelizing Devices
Per Taper Type (Length)
D E H
MPH Feet Feet Feet Feet L 1/2 L 1/3 L 50' Feet Feet Feet
25 10 105 55 35 6 6 6 6 50 155 150
11 115 60 40
12 125 65 45
30 10 150 75 50 6 6 6 6 60 200 150
11 165 85 55 7
12 180 90 60 7
35 10 205 105 70 7 6 6 6 70 250 150
11 225 115 75 8
12 245 125 85 8
40 10 270 135 90 8 6 6 6 80 305 150
11 295 150 100 9
12 320 160 110 9
45 10 450 225 150 11 6 6 6 90 360 150
11 495 250 165 12 7
12 540 270 180 13 7
50 10 500 250 170 11 6 6 6 100 425 250
11 550 275 185 12 7
12 600 300 200 13 7
55 10 550 275 185 11 6 6 6 110 495 250
11 605 305 205 12 7
12 660 330 220 13 7

Note: Channelizing devices used in taper shall be equally spaced at 1/2 D Max.

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