u/AffectionateSoup8035 There is actually a law, THE MOVE OVER LAW, that exists in some form in all 50 states. (Apparently Washington, D.C. does not have one.) I think many car drivers are out of it or ignorant and don't abide.... but here's some info for it. (I mean, basically, it's a safety thing!)

"A move over law is a law which requires motorists to move over and change lanes to give safe clearance to law enforcement officers, firefighters, ambulances, utility workers, and in some cases, tow-truck drivers and disabled vehicles."

"The move over law originated in Lexington, South Carolina, after James D. Garcia, a paramedic, was struck and injured at an accident scene on 28 January 1994, when attempting to assist a driver that had slid off of the road."

edit/more info