Crash Modification Factors for Contrast Pavement Markings on Light-Colored Pavement

Michael Williamson; Sumit Singh

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https://hdl.handle.net/2142/114386 Copy

Description

Title

Crash Modification Factors for Contrast Pavement Markings on Light-Colored Pavement

Author(s)

• Michael Williamson
• Sumit Singh

Issue Date

2022-08

Keyword(s)

• Crash Modification Factor
• Contrast Pavement Markings
• Survey
• Benefit-Cost Analysis
• Crash Reduction
• Highway Safety

Abstract

Roadway departure crashes are a leading cause of fatal and severe injury crashes on high-speed roadways. The objective of this project was to evaluate the safety benefits of contrast pavement markings and to develop a benefit-cost analysis tool for use in project selection. A nationwide survey was developed and deployed to departments of transportation and highway agencies that identified the use of contrast pavement markings at the national level. The survey further determined that no safety benefits have been quantified by any other agency. A before-and-after study using an empirical Bayes approach was conducted on 70 miles of urban/suburban roadways and included data from six states. Crash modification factors were developed for three roadway types at three crash severity levels, all showing a decrease in crashes with the use of contrast pavement markings. The results of this research can be used to predict the type of crash reductions that can be expected when installing contrast pavement markings on high-speed roadways. A benefit-cost analysis tool was also developed and can be used to evaluate the expected reduction in roadway departure crashes on a given roadway section at each crash severity level. The benefit-cost tool provides justification for the extra cost of contrast pavement markings.

Publisher

Illinois Center for Transportation/Illinois Department of Transportation

Series/Report Name or Number

FHWA-ICT-22-010

Type of Resource

text

Language

en

Handle URL

https://hdl.handle.net/2142/114386

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https://hdl.handle.net/2142/114386

Sponsor(s)/Grant Number(s)

IDOT-R27-223

Copyright and License Information

No restrictions. This document is available through the National Technical Information Service, Springfield, VA 22161.

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