Arizona CDL practice test: 413 free practice questions (Based on the official driver handbook). The official format is not yet verified; check the official site before your test. Parking & Stopping Rules: 9 questions. Updated
Where you may park, distances from hydrants and crossings, hill parking and disabled permits.
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2. If your brakes fail when traveling downhill, decide what to do as quickly as possible because:
The longer you wait, the faster your vehicle will go. ✓
The longer you wait, the more vehicles will get out of your way.
The longer you wait, the slower your vehicle will go.
Answer: A. The longer you wait, the faster your vehicle will go.
You should decide quickly because the longer you wait, the faster your vehicle will go. The handbook says to make your move as soon as you know your brakes do not work. It gives a direct reason: delay lets your speed keep rising on the downgrade, which makes stopping harder. That is why you should choose an escape route early rather than waiting. The passage does not say other drivers will clear a path for you, and it does not say waiting will slow you down.
3. If brakes overheat while going down a downhill grade, they may:
Get sticky.
Stop working. ✓
Squeak.
Answer: B. Stop working.
Overheated brakes may stop working, or fade and fail to control the vehicle. The handbook explains that braking creates heat, and brakes can fade or fail when excessive heat builds up from using them too much instead of relying on engine braking. On a downgrade, you are supposed to use the engine as the main way to control speed and save the brakes for slowing or stopping as needed. If the brakes overheat, they can lose their ability to control the vehicle, which matches the idea that they may stop working.
4. If convicted of any traffic violations, excluding parking violations, you must:
Notify your employer within 30 days. ✓
Place a sign on the back of your vehicle noting the conviction.
Forfeit your CDL for six months.
Answer: A. Notify your employer within 30 days.
You must notify your employer within 30 days of the conviction for any traffic violation other than parking. The handbook lists this under other CDL rules that apply in every state: after a conviction for any traffic violation except parking, you have 30 days to tell your employer. It applies no matter what type of vehicle you were driving when the violation happened. The same section adds a separate 30-day duty to notify your motor vehicle licensing agency if the conviction came from another jurisdiction, again excluding parking.
6. When traveling with Division 1.1 explosives, you may park no closer than ____ from the nearest building.
10 feet
50 feet
300 feet ✓
Answer: C. 300 feet
You may park no closer than 300 feet from the nearest building when traveling with Division 1.1 explosives. The handbook's hazardous materials section says that with Division 1.1, 1.2, or 1.3 explosives you must not park within 300 feet of a bridge, tunnel, building, place where people gather, or open fire. It allows only short stops for things the vehicle needs, such as fueling, and says to park briefly if you must stop to do your job. A building is on that list, so the required separation is 300 feet.
When parked on the side of the road, use your four-way flashers. The handbook says that when you pull off the road and stop, you should turn on the four-way emergency flashers, especially at night. It warns that taillights alone are not reliable, since drivers have crashed into parked vehicles after thinking they were moving normally. It also says four-way flashers help approaching drivers notice your vehicle sooner. That makes the four-way flashers the right warning signal for a roadside stop.
8. What is the best way to stop if your brakes fail while you are driving downhill?
Steer onto an escape ramp. ✓
Let the vehicle slow down on its own.
Let rumble strips slow your vehicle.
Answer: A. Steer onto an escape ramp.
The best way is to steer onto an escape ramp. The handbook calls an escape ramp your best hope when brakes fail on a downgrade and says to use it when one is available. It explains that ramps are built to stop runaway vehicles, often with soft gravel, an uphill grade, or both. It also says waiting makes the vehicle faster and harder to stop, so you should act as soon as you know the brakes do not work. If no ramp exists, the handbook directs you to pick the least hazardous route, such as an open field or a side road that flattens out or turns uphill.
9. Before beginning to drive downhill, you should:
Take your vehicle out of gear.
Shift into a lower gear. ✓
Move into the left lane.
Answer: B. Shift into a lower gear.
Before starting downhill, shift into a lower gear. The handbook says to slow down and shift into a low gear before you begin a downgrade, choosing a gear low enough that you can control your speed without hard braking. It warns that relying on the brakes can overheat them and cause a loss of braking power. It also explains that engine braking is strongest in the lower gears, so you should be in the right low gear before speed builds; trying to downshift later may not work and can cost you engine braking. That is why the correct action is to shift down before the hill.