Date of Award
Master of Science
Stephanie S. Ivey
Martin E. Lipinski
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 thesis will 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 occured since 2000 and present findings from analysis before and after crash data to determine the intersection safety impact, if any, of LED traffic signals.
dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.
Jami, Najmeh Ms, "LED Traffic Signal Retrofits: Implications for Intersection Safety" (2011). Electronic Theses and Dissertations. 269.