Automated Real Time Pavement Marking Retroreflectivity Measurements


Laserlux, an automated real time mobile retroreflectometer is being used to measure the retroreflectivity of pavement lane markings. This vehicle-mounted retroreflectometer provides the measurements needed for proper highway pavement marking management. Quick, simple, reliable, objective, and inexpensive measurements at highway speed are the key to getting a statistically representative sample, without hindering the flow of traffic, nor putting the human operators at undue risk. The Laserlux retroreflectometer has repeatability within a tolerance of 10% as measured under supervised testing by the FHWA. The system can be used for various applications, such as implementing pavement standards, planning re-striping strategies, measuring performance of different materials application methods, holding contractors accountable, and establishing a pavement marking management data base.

Meeting Name

78th Annual Meeting of the Transportation Research Board (1999: Jan. 10-14, Washington, DC)


Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Retroreflectivity; Pavement markings; Stripe measurement; Night visibility; Striping

Document Type

Article - Conference proceedings

Document Version


File Type





© 1999 Transportation Research Board, All rights reserved.

Publication Date

14 Jan 1999

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