United States Department of Transportation
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Abstract:Caltrans is committed to using ramp metering as an effective traffic management strategy to maintain an efficient freeway system and protect the investment made in constructing freeways by keeping them operating at or near capacity. Ramp Metering is an integral part of the Traffic Operations Program Strategic Plan which outlines the program's commitment to focus first on implementing operational strategies to reduce congestion and increase safety on California's state highway system. This manual has been prepared to give Caltrans designers, as well as consulting engineers hired by Caltrans, and cities/counties performing design work on State highways, a comprehensive document covering the design and operation of ramp meters. It is a supplement to, but does not supersede Caltrans' Highway Design and Traffic Manuals, Standard Plans, Standard Specifications, Standard Special Provisions, and other current design policies. This manual describes traffic operational policies, design standards and practices for ramp metering installations at new or existing entrance ramps. Glossary, 4 appendices, 24 figures, 52 p.
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