Seminar Series
Dr. Hani Mahmassani
Dr. Joe Zietsman
Implementing Sustainable Transportation at State DOT's
Dr. Joe Zietsman from the Texas Transportation Institute gave a talk entitled "Implementing Sustainable Transportation at State DOT's". His presentation described what sustainable transportation is and what steps can be taken to implement it. The talk was based on a study performed for the Texas Department of Transportation (TxDOT), whose goal was to develop sustainable transportation performance measures for TxDOT's strategic goals and objectives and to develop a methodology for TxDOT to implement a more sustainable transportation system. The research identified 10 performance measures through a workshop process that could address TxDOT's five strategic goals - reduce congestion, enhance safety, expand economic opportunity, improve air quality, and increase the value of transportation assets. The methodology was applied to a pilot corridor comprised of a 15-mile section of US-281 in the San Antonio, TX area.
Click here for the presentation
Dr. Frank Koppelman
Advances in Discrete Choice Modeling
Dr. Frank Koppelman from Northwestern University discussed Advances in Discrete Choice Modeling. According to Dr. Koppelman, recent developments in the structure of discrete choice models have been directed at reducing the computational burden of the multinomial probit model or increasing the flexibility of logit type models. His talk focused on the increasing flexibility of logit models, which culminated with the formulation of the Generalized Extreme Value (GEV), Mixed Logit (MXL) and Mixed GEV (MGEV) Models which combine the advantages of logit and probit models while limiting the degree of computational complexity associated with the probit model.
Dr. Steve Dickerson
Application of Cellular Communications, GPS and Computing to Urban Transit
In his talk entitled "Application of Cellular Communications, GPS, and Computing to Urban Transit" Professor Dickerson described a visionary idea that could change the way we think about public transportation in the near future. In his concept - patented to Georgia Tech in the late 90s - one would use cell phones to request a carpool, to track their location and even as a key to enter the shared vehicles. These vehicles may be driven by the users themselves and would be parked in designated lots scattered around the urban areas. After requesting a carpool, one would simply drive to the closest designated lot to take the appropriate carpool and drive to one's destination along with other users of the system. According to Prof. Dickerson, this system would cost approximately 4.4 M$/year to operate in the Atlanta metropolitan area. "The cell phone is a key ingredient to this scheme", said Dickerson. "It tells you exactly when and where to meet your ride, it assigns to you a rental car near your office or home when needed and allows you to access the auto and pay your fares, MARTA, car rentals and van and car pools, automatically."
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