230: ALL QUIZ BONANZA! #46
Good Job, Brain!
The Inductive Loop in a Traffic Light Detector
A metal detector doesn't make a rur sound, but it does detect the mass of your car above that loop. In syracuse, new york, is the only traffic light that is upside down, green on top and not red on top. There's a deep rooted rivalry with the english when the town installed their first traffic light at an intersection. A lot of irish immigrants came to work on the erie canal.
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