2026 Free California DMV Combination Class A CDL Test 2 (20 Questions And Complete Answers)
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Trailers with low underneath clearance may be difficult to drive:
1. On interstate highways.
2. Over railroad crossings.
3. On dirt roads.
4. At the posted speed limit.
1. On interstate highways.
2. Over railroad crossings.
3. On dirt roads.
4. At the posted speed limit.
Over railroad crossings.
After connecting the air lines to the trailer while coupling, you should:
1. Supply air to the trailer.
2. Chock the wheels.
3. Inspect the fifth wheel.
1. Supply air to the trailer.
2. Chock the wheels.
3. Inspect the fifth wheel.
Supply air to the trailer.
When entering or crossing traffic while driving a combination vehicle, it is especially important that you:
1. Sound your horn.
2. Make sure there is a large enough gap for your vehicle.
3. Expect other drivers to make room for your vehicle.
1. Sound your horn.
2. Make sure there is a large enough gap for your vehicle.
3. Expect other drivers to make room for your vehicle.
Make sure there is a large enough gap for your vehicle.
Trailers built before 1975 are:
1. Required to have spring brakes.
2. Not required to have spring brakes.
3. Unsafe to drive.
1. Required to have spring brakes.
2. Not required to have spring brakes.
3. Unsafe to drive.
Not required to have spring brakes.
Test the tractor protection valve by:
1. Removing the air supply knob.
2. Removing the parking brake control knob.
3. Releasing air with the brake pedal.
4. Releasing air with the gas pedal.
1. Removing the air supply knob.
2. Removing the parking brake control knob.
3. Releasing air with the brake pedal.
4. Releasing air with the gas pedal.
Releasing air with the brake pedal.
If an air supply control is in its "emergency" position:
1. The vehicle will increase speed.
2. The trailer emergency brakes will be applied.
3. The air supply to the trailer will increase.
1. The vehicle will increase speed.
2. The trailer emergency brakes will be applied.
3. The air supply to the trailer will increase.
The trailer emergency brakes will be applied.
Avoid needing to make sudden lane changes by:
1. Using your horn to encourage other drivers to move out of your lane.
2. Only driving slower than the posted speed limit.
3. Watching the road ahead while driving.
1. Using your horn to encourage other drivers to move out of your lane.
2. Only driving slower than the posted speed limit.
3. Watching the road ahead while driving.
Watching the road ahead while driving.
When backing up while coupling a trailer, the tractor should be positioned:
1. Directly in front of the trailer.
2. Directly next to the trailer.
3. Parallel with the trailer.
1. Directly in front of the trailer.
2. Directly next to the trailer.
3. Parallel with the trailer.
Directly in front of the trailer.
In a sudden turn, the ____ trailer is the most likely to turn over.
1. Front
2. Last
3. Middle
1. Front
2. Last
3. Middle
Last
In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when air pressure drops to a level between:
1. 20 and 45 psi.
2. 75 and 105 psi.
3. 50 and 65 psi.
1. 20 and 45 psi.
2. 75 and 105 psi.
3. 50 and 65 psi.
20 and 45 psi.
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