The Mystery Of Utah History
Showing posts with label
traffic signal
.
Show all posts
Showing posts with label
traffic signal
.
Show all posts
Tuesday, August 20, 2013
Who Invented the Traffic Light? Was it a Salt Laker?
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Did the world's first traffic signal originate at this 200 S. Main, Salt Lake City, intersection in 1912? Some believe it did. By...
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