Congestion Responsive On-Ramp Metering: Before and After Studies - Phase 1
The objective of this project was to develop recommendations toward a statewide policy of congestion responsive freeway ramp metering operation. The research is performed in two phases. In phase 1, alternative ramp metering activation strategies were evaluated through simulation modeling on a real-world freeway test site. In phase 2, "before" and "after" field data will be collected and analyzed on freeway test sites that have implemented congestion responsive ramp metering activation. This report describes the research performed in phase 1 of the project. A section of the US-101 freeway in the San Francisco Bay Area was selected as the test site. Field data on traffic and operational characteristics were collected and analyzed to establish the baseline operating conditions at the selected site. Several ramp metering activation strategies were simulated with the VISSIM microscopic model. The analysis of the simulation results showed that 24-7 ramp metering operation could improve the mainline freeways performance by increasing the average travel speeds, and reducing the overall corridor travel-times at the specific site. No significant changes were found on bottleneck discharge flows and the travel-time reliability.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/1004967103
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Corporate Authors:
University of California, Berkeley
California PATH Program, Institute of Transportation Studies
Richmond Field Station, 1357 South 46th Street
Richmond, CA United States 94804-4648California Department of Transportation
Division of Research, Innovation and System Information
1727 30th Street, MS 83
Sacramento, CA United States 95816 -
Authors:
- Skabardonis, Alex
- Lu, Xiao-Yun
- Publication Date: 2016-7-6
Language
- English
Media Info
- Media Type: Digital/other
- Edition: Final Report
- Features: Appendices; Figures; References; Tables;
- Pagination: 66p
Subject/Index Terms
- TRT Terms: Congestion management systems; Microscopic traffic flow; Ramp metering; Traffic actuated controllers; Traffic congestion; Traffic data; Traffic simulation; Travel time
- Identifier Terms: United States Highway 101
- Geographic Terms: San Francisco Bay Area
- Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting;
Filing Info
- Accession Number: 01649675
- Record Type: Publication
- Source Agency: UC Berkeley Transportation Library
- Report/Paper Numbers: CA16-2855, UCB-ITS-PRR--2016-01
- Contract Numbers: 65A0528 Task 005
- Files: CALTRANS, BTRIS, TRIS, ATRI, STATEDOT
- Created Date: Oct 26 2017 5:18PM