Masters Theses
Abstract
"Traffic lights using state-of-the-art LED illumination use 90 percent less electricity and offer a much longer service life and durability than their incandescent counterparts. Taking advantage of the countless benefits, cities around the country have been replacing traditional filament-based traffic signal bulbs with LEDs for years. However, the degradation of LEDs and hence the replacement strategy, are a concern which is faced by most of the Departments of Transportation. The thesis work sponsored by MoDOT, presents the replacement strategy developed based on the field study of LED indicators in Missouri. Three types of analysis are performed with multiple data point collection - Intensity analysis, manufacturer analysis and temperature analysis.
This thesis is an effort to provide decision support for MoDOT regarding the prudent choice of manufacturer, with regards to temperature dependency. Along with the extension of 2010 study at Missouri University of Science and Technology, the work presented also addresses the unresolved issue about performance of red lights and improves the intensity analysis method."--Abstract, page iii.
Advisor(s)
Crow, Mariesa
Committee Member(s)
Long, Suzanna, 1961-
Wu, Cheng Hsiao
Department(s)
Electrical and Computer Engineering
Degree Name
M.S. in Electrical Engineering
Sponsor(s)
Missouri. Department of Transportation
Publisher
Missouri University of Science and Technology
Publication Date
Spring 2014
Pagination
x, 76 pages
Note about bibliography
Includes bibliographical references (pages 73-75).
Geographic Coverage
Missouri
Rights
© 2014 Snehal Satish Digraskar, All rights reserved.
Document Type
Thesis - Open Access
File Type
text
Language
English
Subject Headings
Light emitting diodes
Traffic signs and signals -- Maintenance and repair
Electronic traffic controls -- Maintenance and repair
Traffic signs and signals -- Missouri
Thesis Number
T 10441
Electronic OCLC #
882478038
Recommended Citation
Digraskar, Snehal Satish, "Analysis of factors responsible for life degradation of LED traffic indicators in the state of Missouri" (2014). Masters Theses. 7257.
https://scholarsmine.mst.edu/masters_theses/7257