The Columbus metropolitan freeway management system (CMFMS) effectiveness study : part 2, the after study, executive summary report.
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2006-08-01
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Alternative Title:CMFMS effectiveness study : executive summary report
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Edition:Executive summary report.
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Abstract:Problem: The Ohio Department of Transportation (ODOT)
deployed the first phase of the Columbus Metropolitan
Freeway Management System (CMFMS) along 14 miles
(22.5 km) of I-70 and I-71. The system includes loop
detector stations every 1/3 mile (0.5 km), ramp meters, 4
changeable message signs (CMS), and an integrated
traffic management center (TMC) to coordinate different
government agencies and the media. The system became
operational at the end of 2001. This study evaluates the
performance of the first phase to both understand the
operation of the facility and to help guide future
investments in the CMFMS and other FMSs across the
state of Ohio. The second phase build-out is currently
under construction and is scheduled to be completed in
2006.
Although the primary objective of this study is to
evaluate the performance of the CMFMS, the effort
developed calibration tools and performance measures
that should also prove useful for ongoing operations.
Data for this evaluation were collected on the mainline
and ramps using the CMFMS loop detectors, dedicated
probe vehicle runs and Central Ohio Transit Agency
(COTA) automatic vehicle location (AVL) system on
transit vehicles in the corridor. This study provides
quantitative and qualitative results such as: travel times,
speed data, traffic volume, and traveler delay. The study
develops a suite of performance monitoring tools both to
assess the performance of instrumented freeways and the
reliability of the surveillance system. It also provides a
comprehensive overview of the given traffic monitoring
system for practitioners, allowing them to optimize the
system. In the course of this work we integrated
information from many sources to meet multiple
objectives for system management and monitoring.
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