2026 Free Alabama DMV CDL Double Test 1 (20 Questions And Complete Answers)
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Before driving a vehicle with air brakes, you should ensure that the ____ come on automatically when air pressure falls below 45 psi.
1. Spring brakes
2. Parking brakes
3. Air brakes
1. Spring brakes
2. Parking brakes
3. Air brakes
Spring brakes
On any upgrade, gravity will:
1. Speed your vehicle up.
2. Slow your vehicle down.
3. Not impact your speed.
1. Speed your vehicle up.
2. Slow your vehicle down.
3. Not impact your speed.
Slow your vehicle down.
Dollies equipped with ABS are required to have malfunction lamps located where?
1. On the rear
2. On the left side
3. On the front
4. On the top
1. On the rear
2. On the left side
3. On the front
4. On the top
On the left side
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
If an aggressive driver is involved in a crash down the road, you should:
1. Pull over and yell at them.
2. Stop after the crash scene and report the other driver’s behavior to police.
3. Block the driver in with your vehicle.
1. Pull over and yell at them.
2. Stop after the crash scene and report the other driver’s behavior to police.
3. Block the driver in with your vehicle.
Stop after the crash scene and report the other driver’s behavior to police.
How does doubling your speed from 20 mph to 40 mph affect your vehicle's braking distance?
1. It stays about the same.
2. It increases slightly.
3. It doubles.
4. It quadruples.
1. It stays about the same.
2. It increases slightly.
3. It doubles.
4. It quadruples.
It quadruples.
A distracted driver:
1. Usually reacts well to hazards.
2. Usually has slowed perception.
3. Is usually aware of what is happening around them.
4. Is a good person to follow.
1. Usually reacts well to hazards.
2. Usually has slowed perception.
3. Is usually aware of what is happening around them.
4. Is a good person to follow.
Usually has slowed perception.
When approaching your vehicle as part of a pre-trip inspection, seeing fresh oil underneath the vehicle is:
1. A good sign.
2. Normal.
3. A cause for concern.
1. A good sign.
2. Normal.
3. A cause for concern.
A cause for concern.
What is traction?
1. Friction between the tires and road
2. Tires' rates of rotation
3. The length of time needed to activate the brakes
1. Friction between the tires and road
2. Tires' rates of rotation
3. The length of time needed to activate the brakes
Friction between the tires and road
The service air line is attached to the:
1. Relay valves.
2. Supply line.
3. Emergency air line.
4. Steering wheel.
1. Relay valves.
2. Supply line.
3. Emergency air line.
4. Steering wheel.
Relay valves.
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