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Ramp Meter Operation and Congestion Monitoring
Phone No. (858) 467-3073
CALNET 8-734-3073
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Caltrans > District 11 > Traffic Operations > Ramp Meter Operation and Congestion Monitoring

The Ramp Meter Operation and Congestion Monitoring Branch  is responsible for a wide range of activities related to the operation and control of our existing transportation system.  The meters are utilized as part of our current transportation system. The current ramp meters improve safety, save energy, reduce congestion, minimize environmental impacts, and enhance mobility. The existing freeway infrastructure in large urban areas such as San Diego represents an enormous public investment. Obviously, there is no argument that appropriate management should protect that investment, fostering maximum operational efficency of these facilities. The ramp metering strategy addresses freeway congestion by controlling traffic demand so freeway capacity is not exceeded.

Why We Meter the Freeways Ramp meters are an inexpensive tool to improve traffic flow on freeways.  Ramp meters allow traffic to enter the freeway at a rate dependent on the conditions of the freeway traffic.  While a typical driver might be delayed at the meter, overall travel and freeway speeds are improved.  The metering systemís four primary benefits are:

 Lateral efficiency   -  better use of entire corridorís width;

 Longitudinal efficiency   -  higher efficiency over the entire corridorís length;

 Time efficiency   -  shortened traffic peak period ;    and

 Safety   -  reduced number of accidents in the vicinity of the meter installation.

In other words, it improves transportation which directly impacts our Stateís economic landscape. Congestion Monitoring data provides a system performance tool to planners and decision makers to improve existing facilities and prioritize future projects.
 Ramp Meter/ Traffic Monitoring Operations
 Sandro Bermudez
 Rick Kean
 Christy Le
 Doug Hooper
 Ramp Meter Timing and Strategies
 Sandro Bermudez
 Ramp Meter Support
 Alaa Elabed
 Anush Badii
 Congestion Monitoring
 Douglas Hooper

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