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| View Original: | Traffic detector treadle in California.jpg (1592x2830) | |||
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| Keywords: Traffic detector treadle in California.jpg en This is an older style of traffic detector The wheels of the vehicle go over the treadle which then makes the two metal plates inside contact each other thus telling the traffic signal that a vehicle is at the intersection The treadle is covered with rubber so that water does not get into it Note these can still be seen as of December 2016 on Google Maps satellite view of this intersection own Northwalker 33 935510 -118 098316 Traffic signals in the United States Cc-zero | ||||
