Vehicle Equipment & Safe Operation — West Virginia
West Virginia CDL practice test: 426 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: 195 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 | West Virginia CDL permit (CLP) knowledge tests |
| Topic questions | 195 (46% of 426 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
Not yet verified
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Questions (195)
1. The ____ tells a driver how much pressure is in the air tanks.
- Application pressure gauge
- Air compressor governor
- Supply pressure gauge ✓
- Drum brake
Answer: C. Supply pressure gauge
The supply pressure gauge tells the driver how much pressure is in the air tanks. The handbook says vehicles with air brakes have a pressure gauge connected to the air tank. That gauge shows the pressure stored in the tank. On a dual air brake system, there is a gauge for each half, or one gauge with two needles. This description matches the question exactly: the supply pressure gauge reports air-tank pressure, not brake application pressure or some other brake part.
2. An Anti-Lock Braking System (ABS):
- Allows wheels to lock up.
- Prevents wheels from locking up. ✓
- Makes it easier to turn a large vehicle.
- Assists with the operation of brake lights.
Answer: B. Prevents wheels from locking up.
An Anti-Lock Braking System (ABS) prevents the wheels from locking up. The handbook explains that during hard braking on slippery surfaces, wheels on a vehicle without ABS may lock. If the steering wheels lock, steering control is lost; if other wheels lock, the vehicle may skid or spin. It says ABS helps avoid wheel lockup and keep control. It also notes that ABS may not let you stop faster, but it can let you steer around an obstacle while braking.
3. When asked about the vehicle's oil during the vehicle inspection test, you must be able to do all of the following, except:
- Indicate where the dipstick is located.
- Show that the oil level is within a safe operating range.
- Show that the oil level is above the refill mark.
- Show that the oil level is below the refill mark. ✓
Answer: D. Show that the oil level is below the refill mark.
You do not have to show that the oil level is below the refill mark — a level that low is a problem, not something to demonstrate. The vehicle inspection asks you to confirm that engine oil and the other fluids are at proper levels so the engine and related systems work correctly. A level in a safe operating range, at or above the refill mark, is what a proper level looks like. Oil sitting below the refill mark means the engine is low, so demonstrating that would show a fault instead of showing the check was done. That is the one item on the list that is not part of the oil check.
4. Braking mechanisms are located ____ a brake drum.
- Outside
- Inside ✓
- Next to
- On top of
Answer: B. Inside
The braking mechanism sits inside the brake drum. The handbook describes the s-cam drum brake, the most common foundation brake, and says plainly that the braking mechanism is inside the drum. The wheels are bolted to the drums at each end of the axles, and to stop, the brake shoes and linings are pushed against the inside of the drum. That contact creates the friction that slows the vehicle and builds heat. So the working parts that squeeze and rub are housed within the drum, not mounted around it.
5. During a vehicle inspection, ensure that lug nuts are all of the following, except:
- Free of cracks.
- Free of distortions.
- Loose. ✓
- Free of rust.
Answer: C. Loose.
The exception is loose: during inspection, lug nuts must not be loose. The handbook says to check that all lug nuts are present and that they are not loose. It also says to look for rust trails or shiny threads, which can be signs of looseness. A loose lug nut is a defect, not a condition you want to ensure. The handbook warns that loose or missing nuts can let a wheel come off and cause a crash, so the inspection is meant to catch looseness, not confirm it.
6. To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:
- Set the control to normal. ✓
- Set the control to the off position.
- Set the control to neutral.
- Keep the control at the halfway mark.
Answer: A. Set the control to normal.
Set the front brake limiting valve control to the normal position. The handbook describes a cab control marked "normal" and "slippery" on some older vehicles with a front brake limiting valve. In the "slippery" position, the valve halves the normal air pressure going to the front brakes. The handbook says these valves were meant to reduce front-wheel skidding, but they actually reduce stopping power, and front-wheel braking is good under all conditions. It tells you to keep the control in the "normal" position so you have normal stopping power.
7. Which of the following is not an indication of damaged brakes?
- Cracked drums
- Shoes with oil or grease on them
- Shoes worn thinly
- Pads free of oil or grease ✓
Answer: D. Pads free of oil or grease
8. Properly adjusted outside convex mirrors should allow the driver to see:
- The entire side of the bus up to the mirror mounts. ✓
- The front of the bus.
- The rear door of the bus.
- The top of the bus.
Answer: A. The entire side of the bus up to the mirror mounts.
Properly adjusted outside convex mirrors should let you see the entire side of the bus up to the mirror mounts. The handbook's adjustment list for the side convex mirrors includes seeing the full side of the bus up to where the mirrors are mounted. It also lists the front tires touching the ground and the area from the front of the bus to the service door. Since the question asks what the outside convex mirrors should show, the full-side view is the matching item.
9. When completing pre-trip inspections:
- The inspections should be done the same way each time. ✓
- Different items should be checked each time.
- It is acceptable to check items in a different order each time.
- Not every item needs to be inspected each time.
Answer: A. The inspections should be done the same way each time.
Complete pre-trip inspections the same way each time. The handbook's seven-step inspection method says to do a vehicle inspection the same way every time. A fixed routine helps you learn all the steps and makes it less likely that you will forget an item. Changing what you check or changing the order works against that repeated routine.
10. In a convex mirror, objects seem ____ than they actually are.
- Larger
- Smaller ✓
- Closer
Answer: B. Smaller
In a convex mirror, objects seem smaller than they actually are. The handbook says curved convex mirrors show a wider area, which can help you see more around the vehicle. It also warns that everything appears smaller in them than when you look at it directly, and things seem farther away too. So you have to realize this and allow for it; the smaller image is the mirror's effect, not the object's real size.
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Last checked: 2026-10-17 · Verified from official source
Updated: · Based on the official driver handbook