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OTREC-RR-11-13

eBook (PDF), 50 Pages
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Travel time estimation is an important feature of Advanced Traveler Information Systems (ATIS). This project examines the impact of congestion shock waves on the accuracy of travel time estimates. Bottlenecks are identified and shock wave speeds are analyzed. Practical and theoretical development of the impact of congestion shock waves is presented, and metrics for evaluating the accuracy of travel time estimates are discussed. This project builds upon two previous projects. In the first, ground truth travel time data was collected for Portland, OR freeways. Accuracy of travel time estimates was analyzed using this ground truth data and data from the regional transportation data archive. The second project investigated factors related to estimation errors, and assessed the impact of additional detection and the accuracy of Dynamic Message Signs (DMS) messages. This project analyzes the impact of congestion waves on estimation accuracy and studying additional accuracy metrics.
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Product Details

Published
September 29, 2011
Language
English
Pages
50
File Format
PDF
File Size
755.81 KB

Formats for this Ebook

PDF
Required Software Any PDF Reader, Apple Preview
Supported Devices Windows PC/PocketPC, Mac OS, Linux OS, Apple iPhone/iPod Touch... (See More)
# of Devices Unlimited
Flowing Text / Pages Pages
Printable? Yes
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