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Evaluation of the Performance of Reflection in Raised Pavement Markers

This project evaluated New Jersey Department of Transportation’s three year fixed schedule re-striping program to see if it is consistent with the actual service life of the pavement markings. One of the primary tasks was to develop a threshold value of retroreflectivity below which a pavement marking will no longer be considered “bright enough” to be useful for motorist nighttime guidance.

Two types of data pertaining to pavement markings were collected – measured retroreflectivity and subjective ratings of brightness/visibility by New Jersey drivers. Multiple regression techniques were used to relate the drivers’ ratings and the corresponding measured retroreflectivity.

Project Details

Project Dates: 
January 1, 2001 to June 1, 2002
Principal Investigators: 
Dr. Neville A. Parker
Institution: 
CUNY Institute for Transportation Systems (ITS)
Sponsor(s): 
Research and Innovative Technology Administration / USDOT (RITA)
New Jersey Department of Transportation (NJDOT)
Publications: 
Project Brief
Project Status: 
Complete
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