Vehicle Equipment & Safe Operation — Arizona
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. Vehicle Equipment & Safe Operation: 168 questions.
Brakes, tires, lights, mirrors, seat belts, child seats and basic vehicle control.
This topic page is still being reviewed against the official handbook. Until review is finished it is hidden from search engines.
| Topic / Metric | Value |
|---|---|
| Topic | Vehicle Equipment & Safe Operation |
| License test | Arizona CDL permit (CLP) knowledge tests |
| Topic questions | 168 (41% of 413 total) |
| Review status | This topic page is still being reviewed against the official handbook. Until review is finished it is hidden from search engines. |
Official handbook
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Questions (168)
1. If air pressure drops to a level between ____, a visual low pressure warning signal should have already activated.
- 55 and 75 psi. ✓
- 80 and 95 psi.
- 65 and 100 psi.
Answer: A. 55 and 75 psi.
2. When inspecting your tires, you do not want to find:
- Tire tread that is 4/32 of an inch deep.
- Valve stems without damage.
- Mismatched tire sizes. ✓
Answer: C. Mismatched tire sizes.
You do not want to find mismatched tire sizes. The handbook's tire inspection list names mismatched sizes as a defect to look for, along with wrong air pressure, bad wear, cuts, tread separation, and damaged valve stems. It also says to check for mismatched diameters in dual tires. A tire with the stated tread depth is not the problem being asked about, and an undamaged valve stem is in good condition. So mismatched tire sizes is the condition you do not want to find.
3. Pre-trip inspections should be done:
- Differently each time in order to place emphasis on different items.
- The same way each time to prevent you from forgetting anything. ✓
- Once in a while.
Answer: B. The same way each time to prevent you from forgetting anything.
Pre-trip inspections should be done the same way each time to prevent you from forgetting anything. The handbook's seven-step inspection method says you should inspect your vehicle the same way every time. Doing it in a fixed order helps you learn all the steps and makes it less likely that you will skip or forget something. That is the reason the handbook gives for keeping the routine consistent, so the answer is the one about repeating the same procedure.
4. To warn drivers behind you that you will be slowing down, you should:
- Turn on the right turn signal followed by the left turn signal.
- Tap your brake pedal a few times to illuminate your brake lights. ✓
- Swerve from side to side to get their attention.
Answer: B. Tap your brake pedal a few times to illuminate your brake lights.
Tap your brake pedal a few times so your brake lights flash and warn the drivers behind you that you are slowing down. The handbook's Slowing Down section says that when you know you will need to slow down, you should warn the drivers behind you. It names a few light taps on the brake pedal, just enough to flash the brake lights, as the way to do that. The same section repeats the idea for hazards ahead, tight turns, and stopping in the roadway: brake early, slow gradually, and use brake lights to signal following drivers. The four-way flashers are reserved for moving very slowly or being stopped.
5. Vehicles equipped with Anti-Lock Braking Systems (ABS) have ____ malfunction lamps to indicate when the ABS is not working.
- Green
- Blue
- Yellow ✓
Answer: C. Yellow
The ABS malfunction lamps are yellow. The handbook says vehicles with ABS have yellow malfunction lamps that tell you if something is not working. It also says tractors, trucks, and buses have these yellow ABS lamps on the instrument panel, while trailers have them on the left side, front or rear corner. That direct description of the lamp color supports choosing yellow for the malfunction lamp.
6. What is a tire load?
- The minimum safe weight a tire can carry
- The maximum safe weight a tire can carry ✓
- The weight of a tire
Answer: B. The maximum safe weight a tire can carry
A tire load is the maximum safe weight a tire can carry at a specified pressure, so the correct choice is the maximum safe weight a tire can carry. The handbook's weight definitions say tire load is the greatest safe weight a tire can carry at a given pressure and that this rating appears on the side of each tire. That matches the choice about maximum safe weight, not a minimum and not the tire's own weight. Since the definition is stated outright, there is no need to infer it.
7. Lights that indicate that anti-lock brakes are not working are:
- Gray.
- Blue.
- Yellow. ✓
Answer: C. Yellow.
The lights that indicate anti-lock brakes are not working are yellow. The handbook says vehicles with ABS have yellow malfunction lamps that tell you when something is not working. It also describes the system check: the lamp comes on at start-up and should go out quickly. If the light stays on, the ABS is not working properly. For a trailer, the handbook says a yellow light on the left rear that stays on also means the trailer ABS is not working properly.
8. If a vehicle is equipped with power steering, the hoses should be checked:
- For leaks. ✓
- For the proper amount of brake fluid.
- To ensure that they are connected to the battery.
Answer: A. For leaks.
Power steering hoses should be checked for leaks. The handbook's steering-system defect list says that on a vehicle with power steering you check the hoses, the pump, and the fluid level, and you look for leaks. A later checklist also calls for checking power steering fluid level and hose condition. So the hose check is about finding leaks and other hose problems, not about brake fluid or battery connections. That directly supports checking the hoses for leaks.
9. When parked on a flat surface, you should:
- Use wheel chocks to prevent your vehicle from moving. ✓
- Not use wheel chocks.
- Use wheel chocks, but only if you have applied the parking brake.
Answer: A. Use wheel chocks to prevent your vehicle from moving.
When parked on a flat surface, use wheel chocks to prevent your vehicle from moving. The handbook says on a level surface you should place wheel chocks to hold the vehicle. A flat parking area is that kind of level surface, so chocks are the right step to keep the vehicle from rolling. The combination-vehicle section also treats chocks as a way to keep a trailer from moving, and the hazardous-materials section says to chock trailers and semi-trailers to prevent motion when they are uncoupled. Nothing in the passages makes chocking depend on first applying the parking brake.
10. Having weight loaded in a way that creates a high center of gravity:
- Increases the likelihood of a rollover. ✓
- Increases the likelihood that items will fall down.
- Increases the difficulty of unloading the cargo.
Answer: A. Increases the likelihood of a rollover.
Having a high center of gravity increases the likelihood of a rollover. The handbook says a high center of gravity makes a vehicle more likely to tip over, especially when cargo is piled high or heavy cargo sits on top. It warns that this is most dangerous in curves or when you must swerve to avoid a hazard, and it says to place the heaviest parts under the lightest parts so the load sits as low as possible. Loading weight high therefore raises rollover risk rather than affecting unloading or making items fall down.
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Last checked: 2026-10-17 · Verified from official source
Updated: · Based on the official driver handbook