Asked by Andy Blackwell Uncategorized
Where are traffic lights made?
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Asked in Cars & Vehicles
What part of traffic lights are made of different things?
Who controls traffic lights?
What did came first the vehicles or the traffic lights?
Logically, unless there were reasons to control traffic, there would have been no reason to create or install traffic lights. Because "traffic" generally comprises vehicles (motorized or otherwise), the traffic was probably there prior to the lights. Certainly, there were mechanical traffic signals that preceded traffic lights, not to mention traffic officers who once stood at busy intersections to direct traffic on a regular basis.
Asked in Inventions, Garrett Morgan
In what year did Garrett Morgan invent traffic lights?