You’re driving through Phoenix traffic when suddenly you hear a siren. You check your mirrors and see an ambulance coming up behind you with its emergency lights flashing. Do you stop immediately? Move over? Keep driving until you find a safe place? And what happens if the emergency vehicle is coming from the opposite direction?
These situations happen quickly, which is why knowing Arizona’s rules before you encounter an emergency vehicle can make everyone safer.
Arizona law provides specific instructions for motorists encountering emergency vehicles. Here’s what drivers should know.
Under Arizona Revised Statutes § 28-775, when an authorized emergency vehicle immediately approaches while displaying the required red or red-and-blue emergency light and giving an audible warning such as a siren, other drivers must yield the right-of-way. Drivers must move parallel to and as close as possible to the right-hand edge or curb, clear of an intersection, stop, and remain there until the emergency vehicle passes, unless a police officer directs otherwise. [azleg.gov]
In ordinary driving terms: See and hear an approaching emergency vehicle? Think: right, stop, wait.
Don’t panic or make an abrupt maneuver. Check your mirrors, signal your intentions and move toward the right side of the roadway in a controlled manner. Your objective is to create a clear and predictable path for the emergency vehicle.
Once safely positioned, stop and stay there until the emergency vehicle has passed. [azleg.gov]
This is an especially important situation. Arizona law says your stopped position should be clear of any intersection. [azleg.gov]
Emergency vehicles responding to calls also have special privileges under Arizona law. For example, an authorized emergency vehicle may proceed past a red light or stop sign after slowing as necessary for safe operation. It may also exceed applicable speed limits provided its driver does not endanger life or property. These privileges do not eliminate the emergency driver’s duty to operate with due regard for the safety of others. [azleg.gov]
For everyone else, the lesson is simple: stay alert and don’t make a sudden, unpredictable move just because you hear a siren.
This is one of the areas where drivers need to be particularly careful about relying on a rule they may remember from another state.
Arizona’s emergency-vehicle statute says that, upon the immediate approach of a qualifying emergency vehicle using the required warning light and audible signal, motorists must yield, move toward the right and stop. The statute does not provide a blanket exception saying that motorists may always continue simply because the emergency vehicle is traveling in the opposite direction or because there is a raised median. [azleg.gov]
So avoid turning the phrase “there’s a median, so I don’t have to stop” into a rule of thumb.
Road design, traffic and the emergency vehicle’s route may all affect the situation. The safest approach is to pay attention to where the emergency vehicle is coming from and avoid interfering with its path.
Here’s another common source of confusion.
“Pull over” and “move over” describe two different situations under Arizona law.
When a qualifying emergency vehicle is actively approaching, Arizona law requires you to yield, move as close as possible to the right-hand edge or curb clear of an intersection, and stop until it passes. [azleg.gov]
Arizona’s Move Over law, on the other hand, addresses vehicles that are stationary and displaying flashing or warning lights.
When approaching such a stationary vehicle on a highway with at least four lanes and at least two lanes traveling in your direction, you should proceed cautiously and, when possible and safe, change into a lane that is not adjacent to the stopped vehicle. If changing lanes is impossible or unsafe, the statute says to proceed with due caution, reduce your speed and maintain a safe speed for the road conditions. [azleg.gov]
The Arizona Department of Public Safety describes the idea simply: safely merge into an adjacent lane when emergency personnel are stopped near or on the road, or reduce speed and proceed cautiously when moving over isn’t possible.
Yield, move as close as possible to the right-hand edge or curb, clear of the intersection, and stop until it passes. [azleg.gov]
Remember that Arizona law specifically calls for stopping clear of the intersection. Give the emergency vehicle room rather than unnecessarily occupying the space it might need to cross or turn. [azleg.gov]
This is a Move Over situation. If it is possible and safe, change into a lane that isn’t adjacent to the stopped vehicle. If you cannot safely change lanes, slow down, proceed cautiously and maintain a safe speed for conditions. [azleg.gov]
Don’t use the newly opened road behind the fire engine as an opportunity to follow it through traffic. Arizona law prohibits an ordinary driver from following fire apparatus responding to a fire alarm within 500 feet. [azleg.gov]
When the specified visual and audible signals are operating, other drivers may not approach or drive alongside the police vehicle and must maintain at least 300 feet behind it until the police vehicle moves to the lane closest to the right-hand edge or curb. [azleg.gov]
Knowing the law is important, but so is avoiding a second emergency while trying to make room for the first one.
When you become aware of an approaching emergency vehicle:
The core legal requirements are yielding, positioning your vehicle at the right-hand edge or curb clear of an intersection, and remaining stopped until the emergency vehicle passes. [azleg.gov]
An approaching ambulance, fire truck or police vehicle can create a stressful few seconds for any driver. Fortunately, the safest response is usually straightforward: stay calm, be predictable and give the emergency vehicle room.
And remember the distinction:
Those few seconds of attention and cooperation can help create a safer roadway for drivers, emergency personnel and the people they are rushing to help.
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Please note: this article is intended for general educational purposes and is not legal advice. Traffic laws can change. Drivers should consult current Arizona law and official state guidance for specific questions.
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