Mobile Opertions
(PATA 600 Series)

PATA 601 (Old PATA 6)
Work Space On Or Beyond The Shoulder (No Roadway Encroachment)

  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. The Road Work (W20-1) sign on the shadow vehicle is optional.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Freeways & Expressways 1000 1640 2640 5280

When multiplee distance plagues are used on advance warning signs, they shall all be of the same series type.
Example: either all "AHEAD" or XXX FEET.

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
40 12 320 160 110 9 6 6 6 80 305 150
45 12 540 270 180 13 7 6 6 90 360 150
50 12 600 300 200 13 7 6 6 100 425 250
55 12 660 330 220 13 7 6 6 110 495 250
60 12 720 360 240 13 7 6 6 120 570 250
65 12 780 390 260 13 7 6 6 130 645 250
70 12 840 420 280 13 7 6 6 140 730 250

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

PATA 602 (Old PATA 18)
Work Space In The Left Or Right Lane

  1. Workers performing duties within the work lane shall not remain outside of the work vehicle for more than 60 minutes during the operation.
  2. Shadow vehicles are required unless otherwise stated on the PATA drawings.
  3. Flashing arrow panels are required for all shadow vehicles. Placement of the Lane Closed (W20-5L or W20-5R) sign on shadow vehicle 2 and shadow vehicle 3 is optional. If used, it should be placed so that it will not diminish the target value of the flashing arrow panel.
  4. If sufficient shoulder width is not available for the shadow vehicles positioned on the shoulder, shadow vehicles shall be positioned as close as possible to the shoulder edge.
  5. Shadow vehicle are permitted to straddle edge lines.
  6. Whenever adequate stopping sight distance exists to the rear, shadow vehicle 1 should maintain the minimum distance from the work vehicle and proceed at the same speed. The shadow vehicle should slow down in advance of vertical or horizontal curves.
  7. This operation should be done during non-peak hours of traffic, to be determined by the District Traffic Unit.
  8. Refer to PATA 012 for arrow panel sizing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Freeways & Expressways 1000 1640 2640 5280

When multiplee distance plagues are used on advance warning signs, they shall all be of the same series type.
Example: either all "AHEAD" or XXX FEET.

Continuously Moving Right Lane Operation - Traffic Mergers To The Left

Continouosly Moving Left Lane Operation - Traffic Merges To The Right

Intermittently Moving Right Lane Operation - Traffic Merges To The Left

Intermittently Moving Left Lane Operation - Traffic Merges To The Right

PATA 603 (Old PATA 23)
Work Space In Any Lane Of A Three Or More-Lane Approach (Drawing 1 of 3)

  1. Workers performing duties within the work lane shall not remain outside of the work vehicle for more than 60 minutes during the operation.
  2. Shadow vehicles are required unless otherwise stated on the PATA drawings.
  3. Flashing arrow panels are required for all shadow vehicles. Placement of the Lane Closed (W20-5L, W20-5R, or W9-3) sign on shadow vehicle 2 and shadow vehicle 3 is optional. If used, it should be placed so that it will not diminish the target value of the flashing arrow panel.
  4. If sufficient shoulder width is not available for the shadow vehicles positioned on the shoulder, shadow vehicles shall be positioned as close as possible to the shoulder edge.
  5. Shadow vehicle are permitted to straddle edge lines.
  6. During center lane operations, shadow vehicle 4 shall be utilized if workers are outside of the work vehicle and positioned in the travel lane.
  7. If shadow vehicle 3 is not used during continuously moving center lane operations, shadow vehicle 2 will display a flashing arrow panel pointing to the left and right.
  8. Whenever adequate stopping sight distance exists to the rear, shadow vehicle 1 should maintain the minimum distance from the work vehicle and proceed at the same speed. The shadow vehicle should slow down in advance of vertical or horizontal curves.
  9. This operation should be done during non-peak hours of traffic, to be determined by the District Traffic Unit.
  10. Refer to PATA 012 for arrow panel sizing.

Signs

Sign Spacing Chart

Condition Distance
A B C F
  Feet Feet Feet Feet
Freeways & Expressways 1000 1640 2640 5280

When multiplee distance plagues are used on advance warning signs, they shall all be of the same series type.
Example: either all "AHEAD" or XXX FEET.

Continuously Moving Right Lane Operation - Traffic Merges To The Left

Continuously Moving Left Lane Operation - Traffic Merges to The Right

Continuously Moving Center Lane Operation - Traffic Merges To The Left Or Right

Intermittently Moving Right Lane Operation - Traffic Merges To The Left

Intermittently Moving Left Lane Operation - Traffic Merges to The Right

Intermittently Moving Center Lane Operation - Traffic Merges To The Left

Intemittently Moving Center Lane Operation - Traffic Merges to The Right