Author
Kimley-Horn and Associates, Inc. in association with PB Consult
Benefit Summary HTML

Michigan DOT (MDOT) transportation planners used simulation modeling to develop and implement work zone mobility mitigation plans for I-75 during the Ambassador Bridge Gateway Project in Detroit. As one of the busiest commercial bridges in the world, access to the bridge had to be maintained throughout the project which was expected to last for 18 months (winter of 2008 to the fall 2009).

As part of the project, the I-75/I-96 interchange located near the bridge had to be closed for a period of 90 days. Using a large network microsimulation model (SEMSIM) planners examined a variety of alternatives for road closure strategies and were able to agree on a plan to reduce impacts on travelers. Researchers found that the model did a good job of estimating actual traffic conditions. Benefits were calculated for different strategies based on monetary values assigned to delay savings for motorists and commercial vehicles.

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Lesson Background HTML

Michigan DOT (MDOT) transportation planners used simulation modeling to develop and implement work zone mobility mitigation plans for I-75 during the Ambassador Bridge Gateway Project in Detroit. As one of the busiest commercial bridges in the world, access to the bridge had to be maintained throughout the project which was expected to last for 18 months (winter of 2008 to the fall 2009).

This report included findings from a literature review, several case studies, and a two day workshop where experts discussed the integration of business processes at both the operational level and the programmatic/institutional level as a way to improve traffic operations, address nonrecurring traffic congestion, and improve travel time reliability. A special focus was given to impacts on nonrecurring congestion as these factors can significantly impact travel time reliability. The following lessons were derived from relevant experience on process integration at both the operations level and the programmatic and institutional levels.

Other Reference Number
Report No. S2-L01-RR-1
Pages
91
Publication Sort Date
Publisher
Transportation Research Board
Source ID
1314
Title
Integrating Business Processes to Improve Travel Time Reliability
UNID
614CFF15FAF754FA85257BB300564667
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