Tag: In 1920 Detroit police officer William Potts had the idea to add this signal to make simple stop/go traffic lights safer

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In 1920 Detroit police officer William Potts had the idea to add this signal to make simple stop/go traffic lights safer

by Timothy G.

February 15, 2023

Please find below the In 1920 Detroit police officer William Potts had the idea to add this signal to make ...

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Tag: In 1920 Detroit police officer William Potts had the idea to add this signal to make simple stop/go traffic lights safer

In 1920 Detroit police officer William Potts had the idea to add this signal to make simple stop/go traffic lights safer

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