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Philadelphia Traffic Signals

(Philadelphia's streets commissioner says this week's traffic light problems at 30th Street were NOT the result of the ultra-cold temperatures that affected dozens of other signals around the city.  File photo by Ian Bush)

Severe Cold Froze Dozens of Philly Traffic Signals; 30th St. Was Different, Says Official

“When moisture gets inside of these older traffic signal boxes and the temperatures drop quickly, they freeze up inside, causing problems with the signals,” streets commissioner David Perri explains.

01/10/2014