Life Expectancy Evaluation and Replacement Schedule Development for LED Traffic Signals

Abstract

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.

Meeting Name

31st Annual National Conference of the American Society for Engineering Management (2010: Oct. 13-16, Fayetteville, AR)

Department(s)

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)

978-1617824449

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2010 American Society for Engineering Management (ASEM), All rights reserved.

Publication Date

01 Oct 2010

Link to Full Text

Share

 
COinS