Traffic Flow Metering...By Instinct

When high-tech fails, a Caltrans employee controls the flow metering lights that regulate traffic across San Francisco's Bay Bridge - the busiest toll bridge in the world.

1 minute read

August 9, 2000, 10:00 AM PDT

By Abhijeet Chavan @http://twitter.com/legalaidtech


"Flow metering" ensures that cars go through at just the right rate to prevent bottlenecks. With 280,000 vehicles a day, flow metering is critical on San Francisco's Bay Bridge - the busiest toll bridge in the world. Surveillance cameras, electronic message boards, sensors, and other gadgets are used to control the flow metering lights. But when high-tech fails, its a Caltrans employee who manually controls the flow metering lights that regulate traffic across San Francisco's Bay Bridge by instinct and experience.

Thanks to Abhijeet Chavan

Wednesday, August 9, 2000 in San Jose Mercury News

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