Ramp metering : procedure manual.
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Ramp metering : procedure manual.

Filetype[PDF-3.00 MB]


English
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Details:

  • Corporate Creators:
    California. Dept. of Transportation. District 7
  • Subject/TRT Terms:
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    California
  • Corporate Publisher:
    California. Department of Transportation
  • Abstract:
    Ramp metering is a traffic management tool used to increase the efficiency and safety of the

    traffic operations on freeways. It is one of the most cost effective ways of managing traffic flow.

    It improves traffic flow on congested freeways and often significantly delays the necessity of

    undertaking major freeway improvement projects.

    Freeway ramp meters are traffic signals installed on the freeway on-ramps to regulate the traffic

    entering the freeway system. Ramp meters allow the traffic to enter the freeway at a rate

    dependent on the conditions of freeway mainline traffic. They generally operate during the traffic

    peak periods. The main objective of ramp meters is to maintain the freeway traffic volumes

    below the freeway capacity, and to provide an acceptable level of service. In highly populated

    metropolitan areas, this objective is difficult to maintain for long periods of time due to high

    freeway and on-ramps traffic demand. Stop and go traffic conditions are normally delayed and/or

    shortened and congestion related traffic accidents are highly reduced.

    Freeway ramp meters are often used in conjunction with preferential High Occupancy Vehicles

    (HOV) non-metered lanes in District 7, to provide time saving incentives for use of carpool,

    vanpools and public transit.

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