Stephen Ritchie


B.E., Monash University,Australia, Civil Engineering,first class honors, 1977
M.Eng.Sci., Monash University,Australia, Civil Engineering, 1981
Ph.D., Cornell University, Civil and Environmental Engineering-Transportation, 1983


The Henry Samueli School of Engineering
University of California, Irvine
Irvine, CA 92697-2175

ZOT Code: 
Office: AIRB 4014
(949) 824-4214 Office
(949) 824-8385

Dr. Ritchie studies transportation systems engineering and is specifically interested in advanced traffic management and control systems. He is primarily focused on the development and application of new information technologies to support more efficient transportation systems.

Dr. Ritchie's current research efforts focus on development and implementation of intelligent traffic detection, surveillance and operations systems based on vehicle signature analysis and re-identification. Such systems provide real-time origin-destination data, travel time, density and other link- or section-related measures of traffic system performance to enable implementation of next generation real-time freeway and arterial traffic management and control systems. Dr. Ritchie also is developing artificial neural networks for improved incident detection on freeways and arterials, and algorithms and tools for the measurement of traffic systems performance.

Dr. Ritchie serves as founding editor-in-chief of the international journal, Transportation Research Part C: Emerging Technologies, published by Elsevier Science.