Your car starts, but a serious steering defect makes it unsafe. Does a valid registration make highway driving acceptable?
Correct answer: No; the vehicle must also be mechanically safe.
Registration does not replace a safe vehicle. Arizona requires equipment in working order and a mechanical condition that does not endanger the driver, occupants or other road users.
Source: Arizona Revised Statutes 28-981, subsection A(1)–(2). ↗
Under normal conditions, an ordinary highway vehicle’s working horn must be audible from at least what distance?
Correct answer: 200 feet.
The ordinary horn requirement is at least 200 feet under normal conditions. This is not the separate audible-distance requirement for an emergency-vehicle siren.
Source: Arizona Revised Statutes 28-954, subsection A. ↗
You are on a highway and another driver is slow to move. Which reason justifies using your horn?
Correct answer: Giving a warning reasonably needed for safe operation.
Arizona limits highway horn use to warnings reasonably necessary for safe vehicle operation. It is not a tool for punishing delay or expressing frustration.
Source: Arizona Revised Statutes 28-954, subsection B. ↗
Luggage blocks your view through the rear of a human-driven vehicle. What mirror arrangement does Arizona require?
Correct answer: Two mirrors providing a rearward highway view of at least 200 feet.
When construction or loading obstructs the driver’s rearward view, two properly located mirrors must provide the required 200-foot view. Rear passengers do not replace that equipment.
Source: Arizona Revised Statutes 28-956. ↗
The windshield wipers on your ordinary car have stopped working. What does Arizona require?
Correct answer: Keep the wipers maintained in working order.
The windshield must have a driver-controlled cleaning device, and its wipers must be maintained in working order. Waiting until poor visibility develops is not a substitute for maintenance.
Source: Arizona Revised Statutes 28-957, subsection A–B. ↗
You need to replace a car door window. Which material is required?
Correct answer: Safety glass meeting the applicable safety standards.
Replacement glazing must be safety glass. Its manufacture or treatment reduces the danger from shattered or flying glass and must meet applicable federal safety standards.
Source: Arizona Revised Statutes 28-959, subsection D–E. ↗
A gasoline-car owner opens a muffler bypass before driving on a highway. Is that permitted?
Correct answer: No; a muffler bypass may not be used on the highway.
A highway vehicle may not use a muffler cutout, bypass or similar device. A working muffler must remain in operation; the statute separately exempts electrically powered vehicles.
Source: Arizona Revised Statutes 28-955, subsection A–B and F. ↗
A gasoline car produces excessive smoke because its engine is poorly adjusted. What is required?
Correct answer: Correct the condition so excessive fumes or smoke do not escape.
The engine and power mechanism must be equipped and adjusted to prevent excessive fumes or smoke. This is a maintenance duty, not merely a noise issue.
Source: Arizona Revised Statutes 28-955, subsection C. ↗
After refueling a gasoline car, you discover its required fuel-tank cap is missing. What must close the filling spout before highway operation?
Correct answer: A compliant cap or cover made from noncombustible material.
The fuel filling spout must be properly closed by a cap or cover meeting applicable federal safety standards. A makeshift plug does not satisfy that requirement.
Source: Arizona Revised Statutes 28-965. ↗
Your passenger starts a movie on a dashboard screen visible to you while you drive. May you watch it because someone else selected it?
Correct answer: No; selecting it for you does not make watching the movie lawful.
The moving driver may not watch entertainment video. The rule does not become inapplicable merely because a passenger operates the device.
Source: Arizona Revised Statutes 28-963, subsection A(1)–(2) and B. ↗
Is a display showing a rear-camera view treated like a prohibited entertainment movie while the car is moving?
Correct answer: No; displays supplementing the driver’s surroundings view are excepted.
A display that supplements the driver’s view around the vehicle has a specific exception. That purpose does not authorize entertainment content or remove the need to observe traffic.
Source: Arizona Revised Statutes 28-963, subsection C(2)(c). ↗
What is the minimum head-lamp arrangement required on an ordinary passenger car?
Correct answer: At least two, with at least one on each side of the front.
An ordinary car needs at least two front head lamps, including one on each side. The different motorcycle and other vehicle exceptions are not the rule for the car described.
Source: Arizona Revised Statutes 28-924, subsection A. ↗
One of your car’s installed stop lamps is defective, but another still works. Is one working lamp enough to satisfy Arizona’s equipment rule?
Correct answer: No; every stop lamp must meet the applicable requirements.
Arizona requires a stop lamp and requires every installed stop lamp to comply with the applicable standard. The first-violation warning provision does not make defective lamps acceptable equipment.
Source: Arizona Revised Statutes 28-927, subsection B–C. ↗
A modern car’s parking brake holds it when empty but cannot hold it on its operating grade with its normal load on clean pavement. Is that sufficient?
Correct answer: No; it must hold the loaded vehicle on that grade.
For the vehicles covered by this requirement, parking brakes must hold on operating grades under all loading conditions on a surface free of snow, ice or loose material. This question describes those conditions.
Source: Arizona Revised Statutes 28-952, subsection A(6)(a). ↗
You tow an ordinary utility trailer with a gross weight of exactly 3,000 pounds on the highway. Does it need its own brakes?
Correct answer: Yes; the trailer-brake threshold includes 3,000 pounds.
The requirement begins at a gross weight of 3,000 pounds, including the boundary value. The brakes must control, stop and hold the trailer and operate through the towing driver or automatically with the towing vehicle’s service brakes.
Source: Arizona Revised Statutes 28-952, subsection A(3). ↗
A utility trailer subject to Arizona’s trailer-brake requirement accidentally separates from its tow vehicle. How must its braking system respond?
Correct answer: The trailer brakes must apply automatically.
The required trailer-brake system must apply automatically if the towed vehicle accidentally breaks away. The scenario is an ordinary utility trailer, not the separate drive-away/tow-away truck exception.
Source: Arizona Revised Statutes 28-952, subsection A(3). ↗
You are backing out toward an ordinary street. Another vehicle is approaching close enough that your movement would interfere. What should you do?
Correct answer: Wait until you can back with reasonable safety and no interference.
Arizona allows backing only when it can be done with reasonable safety and without interfering with other traffic. A reverse signal or a slow speed does not grant priority.
Source: Arizona Revised Statutes 28-891, subsection A. ↗
You drive past your intended exit on a controlled-access highway. The roadway behind you looks empty. May you reverse to the exit?
Correct answer: No; do not back on the highway or its ramps.
Backing is prohibited on the roadway, entrance or exit ramps, and access roads of a controlled-access highway. Continue to a lawful route rather than reversing to recover a missed exit.
Source: Arizona Revised Statutes 28-891, subsection B. ↗
You park beside the roadway and a bicyclist is approaching alongside your car. When may you open your door?
Correct answer: When it is reasonably safe and will not interfere with the cyclist.
Check for approaching traffic before opening a vehicle door. Arizona’s rule protects moving traffic, including a cyclist approaching alongside a parked car.
Source: Arizona Revised Statutes 28-905. ↗
After your passenger has finished getting out, may you leave the traffic-side door open while you chat?
Correct answer: No; close it rather than leave it exposed to moving traffic.
A door exposed to moving traffic may not stay open longer than needed to load or unload a passenger. Completing that task does not create an ongoing right to obstruct traffic.
Source: Arizona Revised Statutes 28-905. ↗
A large box on the front passenger seat blocks your view toward a side road. What must you do before driving?
Correct answer: Reposition the load so it does not obstruct the required view.
A vehicle may not be driven with a load that blocks the driver’s view ahead or to the sides or interferes with the controls. Reduce or rearrange the load before travel.
Source: Arizona Revised Statutes 28-893, subsection A. ↗
A passenger sits so that their leg interferes with the driver’s use of the controls. What is required?
Correct answer: The passenger must move to a position that does not interfere.
Passengers may not occupy a position that interferes with the driver’s view or control of the driving mechanism. The rule applies even if the passenger does not intend to cause a problem.
Source: Arizona Revised Statutes 28-893, subsection B. ↗
You strap down a load but leave its tarp loose. Is the load ready for road travel?
Correct answer: No; secure both the load and its covering.
Both cargo and its covering must be secured so they cannot become loose, detached or hazardous. A well-tied load does not make a flapping or detachable tarp acceptable.
Source: Arizona Revised Statutes 28-1098, subsection B. ↗
In clear daylight, a load extends exactly four feet beyond the vehicle’s rear bed or body. What rear warning is required?
Correct answer: A red flag or cloth at least 18 inches square at the extreme end.
The rear-projecting-load rule begins at four feet. In daylight conditions that do not require the specified lighting, place the required red flag or cloth at the extreme rear of the load, fully visible from behind.
Source: Arizona Revised Statutes 28-935, subsection A–B. ↗
At night, a load extends more than four feet beyond the rear bed or body. Is a red cloth alone sufficient?
Correct answer: No; use the required red lighting and reflectors at the load’s end.
The projecting load needs two red lights or lanterns and reflectors, one on each side at its extreme rear, visible at least 500 feet to the sides and rear. These are additional to the vehicle’s required rear light.
Source: Arizona Revised Statutes 28-935, subsection A. ↗
On a downhill highway, a driver shifts into neutral to coast. Is that permitted?
Correct answer: No; coasting downhill with the gears in neutral is prohibited.
Arizona prohibits a motor-vehicle driver from coasting down a grade with the gears in neutral. Keeping the engine running does not change the rule.
Source: Arizona Revised Statutes 28-895, subsection A. ↗
On a narrow mountain highway, how should you position and control your vehicle?
Correct answer: Keep it under control and reasonably near the right-hand edge.
Arizona requires control and a position as near the right-hand edge as reasonably possible on mountain highways, canyons and narrow passages. This is not an instruction to drive off the roadway or crowd an unsafe edge.
Source: Arizona Revised Statutes 28-894. ↗
Your towing speed causes the trailer to sway sideways out of its traffic line. Does remaining below the posted limit make that speed acceptable?
Correct answer: No; a speed that causes that trailer sway is prohibited.
The towing rule specifically prohibits a speed that makes the trailer sway laterally from the line of traffic. A posted maximum does not make an unstable towing speed safe or lawful.
Source: Arizona Revised Statutes 28-896. ↗
An unprotected fire hose lies across your route for use at a fire. May you drive over it simply because you can fit through?
Correct answer: No; wait unless the fire official in command directs you across.
Do not drive over the unprotected hose. The exception is a direction from the fire department official in command, not your own estimate that the hose can withstand the car.
Source: Arizona Revised Statutes 28-897. ↗
Nails spill from your vehicle onto a roadway. What is your responsibility?
Correct answer: Immediately remove them or arrange for their removal.
A person who drops hazardous material must remove it or cause it to be removed immediately. Arrange safe assistance where needed; this duty is not advice to walk into moving traffic.
Source: Arizona Revised Statutes 28-898, subsection B. ↗
A person removes a wrecked vehicle from a highway. What must happen to the broken glass that fell from that vehicle?
Correct answer: It must also be removed from the highway.
Removing a wrecked or damaged vehicle includes removing glass or other injurious material that it dropped on the highway. Moving the vehicle alone does not finish that responsibility.
Source: Arizona Revised Statutes 28-898, subsection C. ↗
Outside a business or residential district, your working car can safely stop off the main traveled part of a highway. May you instead stop in the travel lane for a routine break?
Correct answer: No; use the practicable off-road stopping place.
Where stopping off the paved or main traveled part is practicable, Arizona’s general rule requires it. Keep passage unobstructed and the vehicle visible; a vehicle disabled where stopping cannot be avoided has a separate exception.
Source: Arizona Revised Statutes 28-871, subsection A and B(1). ↗
