Move over or slow down it's the law in Michigan an ALL other states.

Michigan’s Emergency Vehicle Caution Law, more commonly
known as the Move Over Law, requires motorists to move over
for stationary emergency vehicles with the lights activated or
slow down and pass with caution if it is not possible to safely
change lanes.

What vehicles are covered
Road Service vehicles include tow trucks and courtesy vehicles
operated by the Michigan Department of Transportation.

A Spartan Safe Initiative please drive responsibly.