01123227

Component

https://doi.org/10.3141/2103-07

http://scholar.google.com...anan&publication_year=2009

Pavement markings provide useful visual and navigational guidance information to motorists. Current warrants for the application of pavement markings in the United States are based on traffic volume, traveled way width, and number of travel lanes. To be effective, pavement markings must be visible to drivers, particularly at night. The purpose of this paper is to perform an exploratory analysis to determine if a relationship between pavement marking retroreflectivity and crash frequency exists. First, models of pavement marking retroreflectivity degradation were developed from selected highways in North Carolina using artificial neural networks. Monthly estimates of pavement marking retroreflectivity levels were then appended to roadway inventory and crash frequency data. Generalized estimating equations were used to estimate the monthly target crash frequency. The results indicate that the regression parameter estimates for yellow and white edgeline pavement markings were negative, but neither was statistically significant for the two-lane highway nighttime target crash frequency model. For multilane highways, all of the pavement marking retroreflectivity parameter estimates were statistically significant. The white pavement marking retroreflectivity parameter estimates were negative, as expected. The yellow pavement marking retroreflectivity parameter estimate was positive.

01138796

09-1329

English

pp 50-60

2009

Transportation Research Record: Journal of the Transportation Research Board

9780309126182

Print

Figures (2) ; References (31) ; Tables (9)

Crash rates; Edge lines; Highway safety; Multilane highways; Neural networks; Nighttime crashes; Retroreflectivity; Road markings; Traffic crashes; Two lane highways; White; Yellow

Generalized estimating equations

North Carolina

Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control; I81: Accident Statistics

TRIS, TRB, ATRI

Jan 30 2009 5:34PM

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