Communications of the ACM
Santa Clara County Redefines 'Street Smart'
Santa Clara County, CA, has deployed a smart traffic management system.
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Santa Clara County, CA, has deployed a smart traffic management system, which provides real-time data to its Traffic Management Center, transmitting it to cloud computers for analysis and making appropriate modifications to signal timing.
Approximately 500 video cameras on signal poles collect traffic count data, which is used to calibrate signal times for about 1.5 million vehicles each day.
Santa Clara civil engineer Ananth Prasad said, "Now that we know how much traffic volume is on each of the roadways, we are able to put in different signal coordination plans, and those coordination plans vary depending on the level of traffic that is on the expressways."
Pavement sensors can tell when vehicles pull up to an intersection, and tweak signal timing so cyclists have enough time to pass through.
From Government Technology
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