CTS Events
November 14, 2012

Dr. Nebiyou Tilahun, UPP, presents a seminar entitled "An agent based model of origin destination estimation (ADOBE)" Wednesday, November 14th at 4:00 pm in Rm 1127 SEO


November 7, 2012

Mr. Thomas Murtha, CMAP, will address the CTS-IGERT community at 4:00 p.m. in Room 1127 SEO.


October 24, 2012

Please join us in welcoming Dr. Bo Zou, CME, on Wednesday, October 24th, Room 1127 SEO, 4:00 p.m.


CTS Happenings
September 25, 2012

Award Received by Joshua Auld, CTS-IGERT alumnus.


April 20, 2012

Congratulations to James Biagioni, CTS Fellow and CS PhD candidate, winner of the Dean's Scholar award.


January 2, 2012

James Biagioni, CTS Fellow, receives "Best Presentation Award" at SenSys2011


July 30, 2010

Dr. Ouri Wolfson, Dr. Phillip Yu, and Leon Stenneth, CS student and CTS Associate, recently had a paper accepted to the 6th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2010).


May 19, 2008

Roger Chen, "Travel Time Perception and Learning in Traffic Networks"

Download: Travel Time Perception and Learning in Traffic Networks

Roger Chen
Postdoctoral Fellow
Transportation Center
Northwestern University

Time: 1:30 pm
Location: 1000 SEO

View/download a copy of Dr. Chen's presentation here: "Travel Time Perception and Learning in Traffic Networks".

The study of human decision making is central to understanding of socio-economic systems, including transportation systems. Understanding and modeling these decisions are essential for the microscopic understanding of macroscopic social phenomena, such as socialization, opinion formation, economic markets, and urban traffic and activity patterns. This research focuses on the last phenomena, namely the decisions underlying time-dependent network traffic flows. An understanding of the human-level dynamics or mechanisms governing traffic flow by means of empirical and numerical studies, can lead to improved insights into the resulting macroscopic phenomena. This research explores the decision mechanisms underlying day-to-day route choice. Their implications on system performance over time is explored through experiments performed using a network performance model, in this case an agent-based simulation model of individual experience given the collective effects arising from the interaction of the agents' route choice decisions. The results indicate that users' perceptions of travel time uncertainty greatly affect the system performance, in particular the convergence of traffic flows. Future directions for the research will be discussed in terms of empirically modeling these decisions.

Roger Chen is currently a post-doctoral fellow at the Transportation Center at Northwestern University. He completed his PhD in Civil Engineering from the University of Maryland, College Park and his MS and BS from The University of Texas at Austin. His current research focuses on modeling the trip-making and activity scheduling decisions of travelers, and understanding their impact on the behavior and performance of transportation systems over time. Furthermore, he has worked on a broad spectrum of projects that range from the design of air cargo screening systems to emissions modeling for transportation planning.