Life Expectancy Evaluation and Replacement Schedule Development for LED Traffic Signals
LED technology is being widely adopted for use in sustainable traffic signal management. However, the useful life and luminosity characteristics have not been sufficiently studied to provide a life cycle analysis of the technology from a "green" perspective. LED traffic signals fail when their luminous intensity falls below a pre-specified threshold, posing a danger to traffic. This research details a field study of LED traffic signals in Missouri and develops a replacement schedule based on key findings. Rates of degradation were statistically analyzed using Analysis of Variance (ANOVA). Results of this research will provide a methodology for engineering managers in state departments of transportation and local communities in identifying best practices and replacement standards for LED traffic signal technology.
C. Noll et al., "Life Expectancy Evaluation and Replacement Schedule Development for LED Traffic Signals," Proceedings of the 31st Annual National Conference of the American Society for Engineering Management (2010, Fayetteville, AR), pp. 738-745, American Society for Engineering Management (ASEM), Oct 2010.
31st Annual National Conference of the American Society for Engineering Management (2010: Oct. 13-16, Fayetteville, AR)
Engineering Management and Systems Engineering
Keywords and Phrases
Department of Transportation (MODOT); Life Expectancy; Light-Emitting Diode (LED); Missouri; Replacement Schedules; Sustainability; Traffic Signal; Engineering Managers; Life Cycle Analysisl; Missouris; Schedule Development; Standards
International Standard Book Number (ISBN)
Article - Conference proceedings
© 2010 American Society for Engineering Management (ASEM), All rights reserved.