kellyalegria006 kellyalegria006

23-06-2020
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why was the electric traffic signal invented?

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Noahbrendan Noahbrendan

23-06-2020

Answer: to prevent accidents from happening

Explanation:

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bealramirez bealramirez

23-06-2020

To prevent auto accidents from happening and to save gas because they were originally run by gas

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please help! Thank you