Evaluation of guardrail embedded lighting system in Trinidad, Colorado.

Terry, Travis N.; Gibbons, Ronald B.

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Evaluation of guardrail embedded lighting system in Trinidad, Colorado.

2014-02-01
By Terry, Travis N. ; Gibbons, Ronald B.

File Language:

English

Details

Creators:

Terry, Travis N. ; Gibbons, Ronald B.
Corporate Creators:

Virginia Tech Transportation Institute
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

CDOT-2013-17
Resource Type:

Tech Report
Geographical Coverage:

Colorado
Corporate Publisher:

Colorado. Dept. of Transportation. Research Branch
Abstract:

This report provides information on the design considerations of the embedded highway lighting ; design on Interstate-25 in Trinidad, Colorado, in terms of visibility. The information is based on ; visibility characterizations of small targets using luminance, illuminance, and contrast calculations as ; well as participant input on the detectability of small targets. Experimental conditions included two ; different aim angles of the lighting design (forward and cross) as well as two small target colors (red ; and blue). When compared to the small target detection distances produced by conventional overhead ; lighting systems in previous studies, the research determined that the small target visibility distances of ; the embedded lighting design to be shorter by approximately 50%. Adjustments to the spacing, aim, ; and breadth of the lighting design are recommended for future research considerations. ; Implementation ; The results of this research indicate the lighting design is an alternative; however, additional ; considerations to the beam angle, beam width, beam height, and spacing may improve the ; implementation of the system.
Format:

PDF
Funding:

92.2
Download URL:

https://rosap.ntl.bts.gov/view/dot/27098/dot_27098_DS1.pdf
File Type:

[PDF - 1.78 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:5ce2a1a0233a151e76f39b5f81b443a818b03fd0413e983518ec2a570fa7d385

File Language:

English

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