2026 Free Alabama DMV CDL Double Test 2 (20 Questions And Complete Answers)
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What happens when the wheels of a trailer lock up?
1. The trailer will usually continue to move in a straight line.
2. The trailer will disengage.
3. The trailer will likely swing around.
4. The trailer will stop.
1. The trailer will usually continue to move in a straight line.
2. The trailer will disengage.
3. The trailer will likely swing around.
4. The trailer will stop.
The trailer will likely swing around.
Before beginning a trip, you should:
1. Leave the service line valve open.
2. Remove the relay valves.
3. Close the emergency line valve.
1. Leave the service line valve open.
2. Remove the relay valves.
3. Close the emergency line valve.
Close the emergency line valve.
When operating a vehicle with a dual brake system, a driver should:
1. Let the vehicle warm up before driving to ensure that fuel reaches the engine.
2. Wait to begin driving until the air compressor builds up a minimum pressure of 100 psi in both the primary and secondary systems.
3. Begin driving just after the vehicle starts.
4. Pump the pedal about 20 times to build pressure, then begin driving.
1. Let the vehicle warm up before driving to ensure that fuel reaches the engine.
2. Wait to begin driving until the air compressor builds up a minimum pressure of 100 psi in both the primary and secondary systems.
3. Begin driving just after the vehicle starts.
4. Pump the pedal about 20 times to build pressure, then begin driving.
Wait to begin driving until the air compressor builds up a minimum pressure of 100 psi in both the primary and secondary systems.
To help prevent rollovers, you should:
1. Accelerate quickly after stopping.
2. Drive slowly around turns.
3. Keep the load near the back of the trailer.
4. Keep the load on one side of the trailer.
1. Accelerate quickly after stopping.
2. Drive slowly around turns.
3. Keep the load near the back of the trailer.
4. Keep the load on one side of the trailer.
Drive slowly around turns.
To avoid a collision with a hazard on the roadway:
1. You should always try to stop.
2. Swerving may be a safer option than stopping.
3. You should never swerve.
1. You should always try to stop.
2. Swerving may be a safer option than stopping.
3. You should never swerve.
Swerving may be a safer option than stopping.
If using air tanks with manually operated drains, how often should you drain the tanks?
1. Every day
2. Once a week
3. Once a month
4. Once every 3,000 miles
1. Every day
2. Once a week
3. Once a month
4. Once every 3,000 miles
Every day
Having ABS on only one axle:
1. Can be dangerous.
2. Still allows you additional control when braking.
3. Slows the vehicle, but cannot stop it.
1. Can be dangerous.
2. Still allows you additional control when braking.
3. Slows the vehicle, but cannot stop it.
Still allows you additional control when braking.
To release a dolly's spring brakes before positioning the converter dolly for coupling, you should:
1. Use the dolly parking brake control.
2. Remove the air tank petcock.
3. Raise the dolly support.
4. Remove the pintle hook.
1. Use the dolly parking brake control.
2. Remove the air tank petcock.
3. Raise the dolly support.
4. Remove the pintle hook.
Use the dolly parking brake control.
If you don't pull a dolly out from beneath the rear trailer before unlocking the pintle hook:
1. The tow bar may fly up.
2. The kingpin may break.
3. The brakes may become unlocked.
1. The tow bar may fly up.
2. The kingpin may break.
3. The brakes may become unlocked.
The tow bar may fly up.
When in heavy traffic, the safest driving speed is:
1. Slower than the speed being driven by surrounding traffic.
2. The same speed being driven by surrounding traffic.
3. Faster than the speed being driven by surrounding traffic.
1. Slower than the speed being driven by surrounding traffic.
2. The same speed being driven by surrounding traffic.
3. Faster than the speed being driven by surrounding traffic.
The same speed being driven by surrounding traffic.
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