|
|
|
Title: LED Traffic Signal Retrofits: Implications for Intersection Safety
Accession Number: 01371264
Record Type: Component
Abstract: The recent advancements in light emitting diode (LED) technology and the comparative energy savings over traditional incandescent bulbs have led to many municipalities retrofitting traffic signals with new LED bulbs. Although a significant amount of literature exists regarding benefits of LED installations in terms of energy and economic savings, less attention has been given to the potential safety impacts of these massive retrofit projects. This paper presents the results of a study to evaluate the safety implications of the change to LED technology in traffic signals in Memphis, Tennessee, where 56 full LED conversions and 712 partial conversions (red and green only) of signalized intersections have occurred since 2000. Eight intersections where LED retrofit has occurred and two comparison sites with no LED installation were evaluated. Analysis of before and after crash data for the study sample indicates a 47% decrease in safety after LED installation.
Supplemental Notes: This paper was sponsored by TRB committee AHB50 Traffic Control Devices
Monograph Title: Monograph Accession #: 01362476
Report/Paper Numbers: 12-0116
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Jami, NIvey, SLipinski, MGolias, M MPagination: 13p
Publication Date: 2012
Conference:
Transportation Research Board 91st Annual Meeting
Location:
Washington DC, United States Media Type: Digital/other
Features: Figures; References; Tables
TRT Terms: Geographic Terms: Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control; I85: Safety Devices used in Transport Infrastructure
Source Data: Transportation Research Board Annual Meeting 2012 Paper #12-0116
Files: TRIS, TRB
Created Date: Feb 8 2012 4:52PM
|
