2026 Delaware DMV Air Brakes Class B Test 1 (25 Questions And Complete Answers)
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If you are braking on dry pavement while traveling at 55 mph, how much distance will brake lag add to your overall stopping distance?
1. 32 feet
2. 45 feet
3. 20 feet
1. 32 feet
2. 45 feet
3. 20 feet
32 feet
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.
During a static leakage test, what is the maximum leakage rate that is safe for a double combination vehicle?
1. 3 psi in one minute.
2. 6 psi in one minute.
3. 8 psi in one minute.
1. 3 psi in one minute.
2. 6 psi in one minute.
3. 8 psi in one minute.
3 psi in one minute.
ABS brakes:
1. Help you avoid wheel lockup.
2. Lock up your vehicle's wheels.
3. Prevent your vehicle from accelerating when going uphill.
1. Help you avoid wheel lockup.
2. Lock up your vehicle's wheels.
3. Prevent your vehicle from accelerating when going uphill.
Help you avoid wheel lockup.
A wig wag is:
1. A low pressure warning device.
2. A tube that carries air to the brakes.
3. A type of air brake system.
1. A low pressure warning device.
2. A tube that carries air to the brakes.
3. A type of air brake system.
A low pressure warning device.
Truck tractors with air brakes built on or after March 1, 1997 must have:
1. An Anti-Lock Braking System (ABS).
2. Bluetooth.
3. A GPS.
1. An Anti-Lock Braking System (ABS).
2. Bluetooth.
3. A GPS.
An Anti-Lock Braking System (ABS).
Truck tractors with air brakes built on or after March 1, 1997 must have:
1. An Anti-Lock Braking System (ABS).
2. Bluetooth.
3. GPS.
4. A rear back-up camera.
1. An Anti-Lock Braking System (ABS).
2. Bluetooth.
3. GPS.
4. A rear back-up camera.
An Anti-Lock Braking System (ABS).
When traveling down a steep downgrade:'
1. The air brakes should be used.
2. The vehicle should be placed in a low gear and the driver should use engine braking.
3. The driver should continually downshift instead of using the brakes.
1. The air brakes should be used.
2. The vehicle should be placed in a low gear and the driver should use engine braking.
3. The driver should continually downshift instead of using the brakes.
The vehicle should be placed in a low gear and the driver should use engine braking.
What kind of force must emergency brakes use?'
1. Air pressure
2. Mechanical
3. Heavy
4. Electrical
1. Air pressure
2. Mechanical
3. Heavy
4. Electrical
Mechanical
To use the stab braking method in an emergency situation, you should:
1. Apply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process.
2. Apply the brakes about halfway, but keep the wheels rolling.
3. Fully apply the brakes, let the wheels lock up, and hold the brake pedal down, keeping the wheels locked until the vehicle stops.
4. Apply the emergency brake.
1. Apply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process.
2. Apply the brakes about halfway, but keep the wheels rolling.
3. Fully apply the brakes, let the wheels lock up, and hold the brake pedal down, keeping the wheels locked until the vehicle stops.
4. Apply the emergency brake.
Apply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process.
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