LED traffic signal management system : tech summary.

Courville, Leticia S. F. R.

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LED traffic signal management system : tech summary.

2016-06-01
By Courville, Leticia S. F. R.

File Language:

English

Details

Creators:

Courville, Leticia S. F. R.
Corporate Creators:

Louisiana Transportation Research Center
Contributors:

Rupnow, Tyson D.
Corporate Contributors:

Louisiana. Dept. of Transportation and Development ; Louisiana State University (Baton Rouge, La.)
Subject/TRT Terms:
Publication/ Report Number:

FHWA/LA.15/563 ; LTRC Project Number: 10-3P
Resource Type:

Tech Report
Geographical Coverage:

United States ; Louisiana
Corporate Publisher:

Louisiana Transportation Research Center
Abstract:

The light source of a signal module is comprised of an array of multiple individual light emitting diodes (LEDs). ; Fading of the array over its operational life is a serious concern of traffic engineers throughout the nation. The ; Institute of Transportation Engineers (ITE) developed minimum luminous intensity standards for LED signal ; modules that vary depending on the angle of the driver’s view. ; There are approximately 3,350 Louisiana intersections that utilize more than 100,000 LED traffic signal ; modules. The Louisiana Department of Transportation and Development (DOTD) is considering a replacement ; schedule based on signal module lifecycle curves. These curves can show the time duration it takes for the ; luminous intensity of the traffic signal modules to reduce from the initial value to the ITE minimum luminous ; intensity, below which it will be necessary to replace the traffic signal modules. As such, these curves ; represent the safe range of operation between the initial luminous intensity and ; ITE minimum luminous intensity.
Format:

PDF
Alternate URL:

http://www.ltrc.lsu.edu/pdf/2016/ts_563.pdf
Funding:

State Project Number: 736-99-1733
Download URL:

https://rosap.ntl.bts.gov/view/dot/30898/dot_30898_DS1.pdf
File Type:

[PDF - 204.02 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:5fd7493fb32ebcb9e801b0dc27a75bee1958c3be2fdedd719ae2910728aeb3e1

File Language:

English

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