While it appears that during heavy traffic most traffic lights run accordingly to programmed intervals, At night, I've noticed signals tend to be triggered by my car's approach. Some lights will not turn, however. I've sat in a left turn lane at a particular intersection and watched the lights cycle through 3 or 4 cycle repetitions without ever giving me a left turn signal and with no other cars at the intersection. If I back up slightly and pull forward, the left turn light will then change. How do these traffic light sensors register my car's approach?
2006-08-28
02:04:52
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3 answers
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Safety