Masters Theses
Abstract
"Control delay is a key parameter in computing the level of service provided to motorists at signalized intersections. With the introduction of different forms of actuated signal control, there is a need for effective evaluation tools that can estimate the delay accurately. While the current state-of-the-art analytical models provide simple approaches for estimating delay, they cannot account for the stochastic properties of actuated signals. Although several simulation models are currently available for the analysis of actuated signals, there are concerns in using these stochastic models for making critical design decisions because many models are unproven and there is little information available about their accuracy in analyzing actuated signals.
This thesis compared the delay estimates from two state-of-the-art microsimulation models, SimTraffic and CORSIM, with field measurements in an attempt to determine how well these models determine movement delays at traffic actuated signals. Applying the simulation models for three traffic-actuated signals in the St. Louis area facilitated the comparisons in the study. Statistical analysis includes Analysis of Variance (ANOVA), paired sample t-test and Wilcoxon Signed Rank test to determine significant differences between each model delay results and the field delay estimates. From the results obtained in this study, it is demonstrated that the selected models can provide consistent delay estimates for both left tum and through movements; however, SimTraffic gives slightly lower and CORSIM provides higher delay results than the field delay. On the other hand, both models give significantly higher delay estimates for right tum vehicles. Finally, this study spells out the requirements for further research to aid in selecting an appropriate model for the evaluation of actuated signals"--Abstract, p. iii
Advisor(s)
Dr. Muhammad Qureshi
Committee Member(s)
Dr. Gary Spring
Dr. V. A. Samaranayake
Department(s)
Civil, Architectural and Environmental Engineering
Degree Name
M.S. in Civil Engineering
Publisher
University of Missouri--Rolla
Publication Date
Spring 2003
Pagination
viii, 58 pages
Note about bibliography
Includes bibliographical references (pages 55-57)
Rights
© 2003 Sripathi Reddy Jitta, All rights reserved.
Document Type
Thesis - Restricted Access
File Type
text
Language
English
Subject Headings
Electronic traffic controls
Traffic signs and signals
Traffic flow
Thesis Number
T 8153
Print OCLC #
52640364
Recommended Citation
Jitta, Sripathi Reddy, "Estimation of delay at traffic actuated signals: case study comparison of SimTraffic and CORSIM" (2003). Masters Theses. 2248.
https://scholarsmine.mst.edu/masters_theses/2248
Share My Thesis If you are the author of this work and would like to grant permission to make it openly accessible to all, please click the button above.
