What is Arizona's move-over law?

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Arizona's move-over law requires that when a driver approaches a stationary vehicle that is displaying alternately flashing lights or warning lights, the driver must do one of the following: if on a highway with at least four lanes and at least two lanes proceeding in the same direction, proceed with due caution and, if possible and with due regard to safety and traffic conditions, yield the right-of-way by changing into a lane not adjacent to the stationary vehicle; or, if changing lanes would be impossible or unsafe, proceed with due caution and reduce speed, maintaining a safe speed for road conditions .

A violation of this move-over requirement carries a civil penalty of $275 for a first violation, $500 for a second violation within five years, and $1,000 for a third or subsequent violation within five years .

Separate from the move-over rule, Arizona law also governs approaching an emergency vehicle that is itself in motion: except when otherwise directed by a police officer, on the immediate approach of an authorized emergency vehicle displaying a red or red and blue light visible from five hundred feet and sounding a siren, exhaust whistle or bell, a driver must yield the right-of-way, immediately pull parallel to and as close as possible to the right-hand edge or curb clear of any intersection, and stop and remain there until the emergency vehicle has passed . In addition, a driver not on official business may not follow fire apparatus responding to a fire alarm closer than five hundred feet, or drive into or park within the block where fire apparatus has stopped in answer to a fire alarm .