Appendix C
Quality Guidelines For Temporary Traffic Control Devices

Evaluation Guide For Work Zone Signs

ACCEPTABLE

There are several abrasions on the surface but very little loss of lettering. There has been no touch-up of the lettering. This message is legible per the design criteria of the MUTCD and PennDOT Publication 236.

MARGINAL

Of the many surface abrasions throughout the sign face, many are within the individual letters of the message. The sign surface is free of any residue. Although some color fading is evident,the background color and reflectivity are still apparent at night. This message is legible per the design criteria of the MUTCD and PennDOT Publication 236.

UNACCEPTABLE

Signs with asphalt splatter or cement slurry of an amount similar to the abrasions that are evident throughout the face of this signs are unacceptable. Some letters have a loss of more than 50 percent. There is noticeable color-fading. The message is illegible per the design criteria of the MUTCD and PennDOT Publication 236.

Evaluation Guide For Barricade Panels or Vertical Panels

ACCEPTABLE

Panels not deformed to an extent so as decrease the panels target value.There are several abrasions on the surface but very little loss of reflective sheeting. The orange is vivid and the stripes provide contrast.

MARGINAL

The sheeting has numerous tears and scratches; however, it is free of large areas of residue or missing reflective material. The large dent shown reduces the effectiveness of the upper reflective band; however, the drum strength is not reduced. The drum maintains its original shape.

UNACCEPTABLE

The surface is marred over a high percentage of the panel area. There is noticeable loss of reflectivity and obvious color fading. Panels with asphalt splatter and/or cement slurry, or any combination of missing and covered re-flectivematerial similar in area to that shown here would also make a panel unacceptable.

Evaluation Guide For Drums

ACCEPTABLE

The sheeting has only minor tears and scratches. The dent shown does not seriously reduce the reflectivity. The drum maintains its intended original shape.

MARGINAL

There are numerous surface abrasions through the panel surface.Some color fading is evident;however,it is free of lagres area of residue or missing reflective material.The orange is vivid and the stripes provide contrast.

UNACCEPTABLE

The large areas of missing reflective material on the fractured upper area make this drum unacceptable. Drums with asphalt splatter and/or cement slurry, or any combination of missing and covered reflective material would also make a drum unacceptable. Substantial deformation of a drum which reduces the original dimensions may cause the drum to be considered as "unacceptable" even if other parameters are still "acceptable'.

Evaluation Guide For Cones

ACCEPTABLE

The conical shape should remain clearly identifiable with no significant distortion and must be free standing in its normal position. The surface is free of punctures and abrasions. The surface is free of asphalt splatter, cement slurry or other material and will readily respond to washing. The reflective bands, if required, have little or no loss of reflectivity, with only minor tears and scratches.

MARGINAL

The surface has some asphalt splatterings or cement slurry and may not be readily cleaned due to abrasion and discoloration. The reflective bands, if required, have numerous tears and scratches, but are free of large areas of residue or missing material.

UNACCEPTABLE

Punctures and large areas of straining asphalt splatter and cement slurry make these an unlikely candidate for improvement. Large areas of missing or stained reflective material make the cone unacceptable.

Evaluation Guide For High Visibility Work Zone Safety Apparel

ACCEPTABLE

New high-visibility safety apparel is characterized by having vivid color contrast and high reflectivity. Apparel that is used but is in like-new condition is characterized as having excellent color contrast, excellent reflectivity and is not faded or soiled.

MARGINAL

Good reflectivity although the vest has some soiling and light fading. Note: The second picture was taken with a flash and simulates nighttime conditions.

UNACCEPTABLE

Little or no refelctivity, and soiled and faded material. Poor color contrast, low or no reflectivity, significant fading or soiling, and deteriorated reflective strips.

Evaluation Guide For Tubular Markers

ACCEPTABLE

The surface is free of punctures and abrasions, asphalt splatter, cement slurry, or other material and will readily respond to washing . The reflective bands, if required, have little or no loss of reflectivity, with only minor tears and scratches.

MARGINAL

The surface has some asphalt splattering or cement slurry and may not be readily cleaned due to abrasion or discoloration. The reflective bands, if required, have numerous tears and scratches, but are free of large areas of residue or missing material.

UNACCEPTABLE

Punctures and large areas of staining, asphalt splatter or cement slurry make these unlikely candidates for improvement. Large areas of missing or stained reflective material also make the markers unacceptable.

Evaluation Guide For Portable Changeable Message Sign Boards

ACCEPTABLE

90% or more of the pixels per character module are operating properly. The text should be legible from a minimum of 650' to 900' as required in the material specifications.

UNACCEPTABLE

Less than 90% of the pixels per character module are operating properly or not performing within the criteria of the MUTCD or text is not legible from the specified acceptable distances.

Evaluation Guide For Flashing Arrow Panels
(Merge Mode)

ACCEPTABLE

No more than one (1) lamp out in stem and none out in arrowhead. Lights dim properly.

MARGINAL

Two (2) or fewer lamps in stem out. No lamps out in head. Lights dim properly.

UNACCEPTABLE

Any lamp out in the arrowhead, or more than two (2) lamps out in the stem or lights do not dim properly.

Note: Any operating lamp which is out of alignment will be considered "not functioning".

Evaluation Guide For Flashing Arrow Panels
(Double Arrow Mode)

ACCEPTABLE

No more than one (1) lamp out in stem and none out in arrowhead. Lights dim properly.

MARGINAL

Two (2) or fewer lamps in stem out. Both arrowheads completely functional with no lamps out. Lights dim properly.

UNACCEPTABLE

Any lamps in arrowheads out or more than two (2) lamps out in the stem or lights do not dim properly.

Note: Any operating lamp which is out of alignment will be considered "not functioning".

Evaluation Guide For Flashing Arrow Panels
(Caution Mode) (Bar or Corners)

ACCEPTABLE

Four (4) or more lamps operating. Lights dim properly.

MARGINAL

Minimum of four (4) lamps functioning. Lights dim properly.

UNACCEPTABLE

Less than four (4) lamps functioning or lights do not dim properly.

Note: Any operating lamp which is out of alignment will be considered "not functioning".