2026 Connecticut DMV Combination Class A Test 2 (20 Questions And Complete Answers)
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In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when:
1. Air pressure drops to a level between 20 and 45 psi.
2. You are experiencing a trailer jackknife.
3. Wheels have regained traction after a skid.
4. Air pressure is above 45 psi.
1. Air pressure drops to a level between 20 and 45 psi.
2. You are experiencing a trailer jackknife.
3. Wheels have regained traction after a skid.
4. Air pressure is above 45 psi.
Air pressure drops to a level between 20 and 45 psi.
The best way to recognize that your trailer has begun to skid is by:
1. Seeing other drivers' faces.
2. Seeing it in your mirrors.
3. Feeling it.
4. Listening to the radio.
1. Seeing other drivers' faces.
2. Seeing it in your mirrors.
3. Feeling it.
4. Listening to the radio.
Seeing it in your mirrors.
Combination vehicles need extra space on the road because they:
1. Drive more slowly than other commercial motor vehicles.
2. Are heavier than other commercial motor vehicles.
3. Need more space to turn and stop than other commercial motor vehicles.
1. Drive more slowly than other commercial motor vehicles.
2. Are heavier than other commercial motor vehicles.
3. Need more space to turn and stop than other commercial motor vehicles.
Need more space to turn and stop than other commercial motor vehicles.
An air supply control in its "emergency" position will:
1. Turn on the air supply.
2. Apply the trailer emergency brakes.
3. Prevent a skid.
4. Accelerate the vehicle.
1. Turn on the air supply.
2. Apply the trailer emergency brakes.
3. Prevent a skid.
4. Accelerate the vehicle.
Apply the trailer emergency brakes.
When braking with ABS, you should:
1. Push the brake pedal harder than usual.
2. Push the brake pedal as you normally would.
3. Push the brake pedal more lightly than usual.
1. Push the brake pedal harder than usual.
2. Push the brake pedal as you normally would.
3. Push the brake pedal more lightly than usual.
Push the brake pedal as you normally would.
When you are pulling a trailer, the air supply control lever should be in its ____ position.
1. Emergency
2. Supply
3. Normal
1. Emergency
2. Supply
3. Normal
Normal
Before a drive, ensure that air flows to all trailers by:
1. Opening the rear shut-off valves and listening for escaping air.
2. Closing the rear shut-off valves and listening for escaping air.
3. Disconnecting air supply lines and listening for escaping air.
4. Rolling each trailer down a hill and testing the brakes.
1. Opening the rear shut-off valves and listening for escaping air.
2. Closing the rear shut-off valves and listening for escaping air.
3. Disconnecting air supply lines and listening for escaping air.
4. Rolling each trailer down a hill and testing the brakes.
Opening the rear shut-off valves and listening for escaping air.
Before backing your tractor under the trailer, make sure your trailer brakes are:
1. Disengaged.
2. Locked.
3. Deactivated.
4. Dry.
1. Disengaged.
2. Locked.
3. Deactivated.
4. Dry.
Locked.
Which of the following types of vehicles is most prone to the “crack-the-whip" effect?
1. An automobile
2. A three-axle tractor
3. A bobtail tractor
4. A triple combination
1. An automobile
2. A three-axle tractor
3. A bobtail tractor
4. A triple combination
A triple combination
The "crack-the-whip" effect can:
1. Turn over a trailer.
2. Be more effective than braking.
3. Make a truck move faster.
1. Turn over a trailer.
2. Be more effective than braking.
3. Make a truck move faster.
Turn over a trailer.
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