1927 : Michigan Installs First Yellow Lines on Highways To Indicate No Passing

When:
December 18, 2021 all-day
2021-12-18T00:00:00-05:00
2021-12-19T00:00:00-05:00

Michigan’s highway department became the first to paint solid yellow lines to indicate no passing zones on curves and hills. Signs had to be posted telling out-of-state motorists what the lines meant.

Source : Historical Society of Michigan

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