Retroreflectivity Performance of 90-mil Thermoplastic Longitudinal Pavement Markings During the Early Application Period.

Author(s)
Clarke, D.B. & Yan, X.
Year
Abstract

Because longitudinal pavement markings provide a visual reference to helpthe driver properly guide the vehicle, markings must be replaced once their nighttime retroreflectivity falls below an acceptable level. The rate of degradation of pavement marking retroreflectivity differs between various marking materials. This research investigates change in retroreflectivity over time for 90-mil thermoplastic markings. Between October 2005 and July 2007, the retroreflective properties of 85 sites in 14 counties of Tennessee having longitudinal 90-mil thermoplastic markings were studied. In accordance with ASTM E-1710, a 30-meter geometry retroreflectometer was used for retroreflectivity measurements. This paper describes and analyzes the patterns of marking retroreflectivity decay over time found during the study. It also assesses three statistical regression models (Linear, Logarithmic, and Quadratic) for predicting marking retroreflectivity based on application time.

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Publication

Library number
C 45107 (In: C 45019 DVD)
Source

In: Compendium of papers DVD 88th Annual Meeting of the Transportation Research Board TRB, Washington, D.C., January 11-15, 2009, 22 p.

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This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.