MDOT State Study 324: Assessing the Effectiveness of Blue Lights on Work Zone Safety

Wang, Jun; Howard, Isaac L.; Assafi, Mohammad Nafe

i

MDOT State Study 324: Assessing the Effectiveness of Blue Lights on Work Zone Safety

2026-04-28
By Wang, Jun ; Howard, Isaac L. ; Assafi, Mohammad Nafe

File Language:

English

Details

Alternative Title:

Assessing the Effectiveness of Blue Lights on Work Zone Safety
Creators:

Wang, Jun ; Howard, Isaac L. ; Assafi, Mohammad Nafe
Corporate Creators:

Mississippi State University. Department of Civil and Environmental Engineering
Corporate Contributors:

Mississippi Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/MDOT-RD-26-324
Resource Type:

Tech Report
Geographical Coverage:

United States ; Mississippi
Edition:

09/17/2021-06/30/2026
Corporate Publisher:

Mississippi. Dept. of Transportation
Abstract:

This project investigated the effectiveness of blue lights in work zones following the enactment of Mississippi's "Blue Light Law". The methodology combined a systematic literature review, a nationwide survey, and field data analysis. The literature review indicated a lack of standardized guidance. The survey findings showed that practitioners perceived blue lights as effective in improving alertness. The field data analysis suggested that blue lights were associated with changes in driver behavior, including shifts away from the lane closest to the construction and more consistent nighttime speed reductions. Overall, blue lights may function as a visual signal that supports safer driving behavior, especially at night. This highlighted the need for further evaluation and development of standardized deployment strategies in work zones.
Format:

PDF
Funding:

SPR-2021-00(012)/108890-101000
Download URL:

https://rosap.ntl.bts.gov/view/dot/93164/dot_93164_DS1.pdf
File Type:

[PDF - 6.44 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:88b5b7cccbda6531e56a29c835eb72f6ae90d8e7738a08075c5cd1a2758556d380aabbb5661fa62646c237d5bb51bbd9bbdd60bfd1db43ec681fed2071aab77a

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.