How does a traffic signal knows when to turn green? Especially late at night when you are the only driver on the road. In this video, I chat with two traffic signal experts: Mohammed Bendelhoum, an engineer with the California Dept. of Transportation (Caltrans) and Brian Girardo (Iteris) explore the history of vehicle detection (induction loops and video/camera detection) to explore which method is better.

Road Guy Rob

Rob is a 12-year veteran public radio reporter and talk show producer. Other staffers at the station called him the "road guy" because he kept running off to cover all the transportation stories. Rob has degrees in Geography (BS, 2010) and Civil Engineering (MS, 2018).

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