Evaluation of Light Emitting Diode Outlined Traffic Signal Backplates at Intersections with Light Rail Lines
This paper presents an evaluation of the use of Light Emitting Diode (LED)-outlined traffic signal backplates for four treatment intersections in Houston, Texas. The backplates emit a red light around the perimeter of the traffic signal backplate when the traffic signal indication is red. The intended effect of the backplates was to reduce red light running violations and crashes on intersection approaches to Main Street, which contains an at-grade light rail line. Two before and after studies were conducted to determine the impacts on crashes, red light running (RLR) violations, and right turn on red (RTOR) movements, which are prohibited on this approach. From the analysis results, it was determined that the LED-outlined backplates appeared to reduce RLR and RTOR violations.
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Supplemental Notes:
- This paper was sponsored by TRB committee AHB50 Standing Committee on Traffic Control Devices.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Tydlacka, Jonathan
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Conference:
- Transportation Research Board 96th Annual Meeting
- Location: Washington DC, United States
- Date: 2017-1-8 to 2017-1-12
- Date: 2017
Language
- English
Media Info
- Media Type: Digital/other
- Features: Photos; References; Tables;
- Pagination: 16p
- Monograph Title: TRB 96th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: At grade intersections; Light emitting diodes; Light rail transit grade crossings; Red light running; Signalized intersections; Traffic safety; Traffic signals
- Geographic Terms: Houston (Texas)
- Subject Areas: Highways; Railroads; Safety and Human Factors;
Filing Info
- Accession Number: 01628215
- Record Type: Publication
- Report/Paper Numbers: 17-06757
- Files: TRIS, TRB, ATRI
- Created Date: Mar 7 2017 10:25AM