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The National Academies

NCHRP 20-07/Task 116 [Completed]

User's Guide for Evaluating Sign Retroreflectivity
[ NCHRP 20-07 (Research for AASHTO Standing Committee on Highways) ]

  Project Data
Funds: 40000
Research Agency: Bellomo-McGee, Inc.
Effective Date: 7/26/1999
Completion Date: 7/31/2000
Comments: Completed

Task 116, FY 2000, "User's Guide for Evaluating Sign Retroreflectivity" (BMI, Hugh McGee). The AASHTO Task Force on Retroreflectivity (see Task 111) developed some alternative language for specifying the minimum retroreflectivity of signs in the Manual on Uniform Traffic Control Devices (MUTCD). Task 116 reviewed the alternative language and provided recommendations to the Task Force. It also produced recommended changes to the FHWA's draft "Nighttime Visual Inspection Guide for Traffic Sign Retroreflectivity." The report has been sent to AASHTO for their further use. (NCHRP Staff: B.R. Derr)

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