Why are red lights on the top of traffic lights and green lights on the bottom?
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Why are red lights on the top of traffic lights and green lights on the bottom?
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Red lights are placed at the top in the signal lights because it was ...View the full answer
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Related Book For
Exploring Engineering An Introduction to Engineering and Design
ISBN: 978-0123747235
2nd edition
Authors: Philip Kosky, George Wise, Robert Balmer, William Keat
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