Evaluating All-Weather Pavement Markings in Illinois: Volume 1

Hawkins, Neal R.; Pike, Adam M.; Smadi, Omar G.; Knickerbocker, S.; Carlson, Paul J.

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https://hdl.handle.net/2142/88450 Copy

Description

Title

Evaluating All-Weather Pavement Markings in Illinois: Volume 1

Author(s)

• Hawkins, Neal R.
• Pike, Adam M.
• Smadi, Omar G.
• Knickerbocker, S.
• Carlson, Paul J.

Issue Date

2015-12

Keyword(s)

• all-weather
• pavement markings
• wet retroreflectivity
• field evaluation
• laboratory evaluation
• degredation
• continuous wetting
• recovery

Geographic Coverage

Illinois

Abstract

Pavement markings provide critical guidance to motorists, especially under dark (non-lighted) conditions. However, the ability to see these pavement markings on a wet, rainy night is problematic given that the presence of water considerably decreases pavement marking retroreflectivity. This project evaluated the performance of several allweather pavement marking products in an effort to provide guidance on their use on Illinois Department of Transportation (IDOT) roadways. In addition, a laboratory evaluation was completed in an effort to simulate degradation mechanisms of these pavement markings so that future all-weather materials can be evaluated in a timely manner within the lab versus public roadway. The study found that only 15% of the all-weather products provided a retroreflectivity of 50 millicandelas per meter squared per lux (mcd/m²/lux), which is noted as (mcd) within this report, under continuous wetting conditions. The lab evaluation showed some promise for the dry retroreflectivity performance given that data variability was low and there was good correlation initially with the field data. The correlation was not as good, however, as the markings aged, and correlation in the wet conditions was not good.

Publisher

Illinois Center for Transportation/Illinois Department of Transportation

Series/Report Name or Number

Illinois Transportation Series No. 15-018; FHWA-ICT-15-028

ISSN

0197-9191

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/88450

Sponsor(s)/Grant Number(s)

Illinois Department of Transportation, R27-120

Copyright and License Information

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

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