Reliable Routing in Transit Networks
The purpose of this project is to develop routing algorithms that help travelers hedge against uncertainties in transit networks, to measure and analyze the reliability performance of transit services using these algorithms, and to implement a prototype reliability-based transit route planning tool and test it on real-world problems. The research team plans to leverage on the collaboration with Chicago Transit Authority (CTA) and Google Inc. to deploy and evaluate the proposed methods and tools. Travel reliability is a critical dimension in user experience of public transportation services. A recent survey of commuters from the Chicago metropolitan area (Nie, Wu, Zissman, Lee & Haynes 2010) reveals that reliability is the second most important factor that affects commuters' route choice, next only to travel time. Transit systems are affected by uncertainties of various sorts, ranging from extreme weather conditions, serious traffic accidents to unforeseeable mechanical failures and human errors. While these uncertainties could adversely disrupt transit services, their overall impacts are rarely documented and understood in existing systems. As a result, neither transit operators nor transit users are able to make proactive decisions to ensure travel reliability. Ignoring the impacts of uncertainties often result in misallocation of limited resources in the transit system. From the user point of view, the lack of reliability either encourages overly conservative risk-averse behavior or leads to uncomfortable, sometimes disastrous, disruptions. Not surprisingly, almost half of the commuters in the aforementioned survey describe their transit service as "unreliable".
Language
- English
Project
- Status: Completed
- Funding: $67600.00
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Contract Numbers:
CCITT Y5-03
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Sponsor Organizations:
Research and Innovative Technology Administration
University Transportation Centers Program
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Principal Investigators:
Nie, Yu (Marco)
- Start Date: 20110601
- Expected Completion Date: 0
- Actual Completion Date: 20130515
- Source Data: RiP Project 29850
Subject/Index Terms
- TRT Terms: Networks; Public transit; Route choice; Service disruption
- Uncontrolled Terms: Service reliability
- Geographic Terms: Chicago (Illinois)
- Subject Areas: Data and Information Technology; Planning and Forecasting; Public Transportation;
Filing Info
- Accession Number: 01489162
- Record Type: Research project
- Source Agency: Center for the Commercialization of Innovative Transportation Technology
- Contract Numbers: CCITT Y5-03
- Files: UTC, RiP
- Created Date: Aug 2 2013 1:00AM