2026 Massachusetts DMV Combination Class A Test 1 (20 Questions And Complete Answers)
1 / 20
Terms in this set
20
If a trailer begins to jackknife, you should not:
1. Release the brakes.
2. Apply the trailer hand brake.
3. Allow the wheels to grip the road.
4. Allow the trailer to straighten out.
1. Release the brakes.
2. Apply the trailer hand brake.
3. Allow the wheels to grip the road.
4. Allow the trailer to straighten out.
Apply the trailer hand brake.
Simply changing lanes can cause:
1. A “crack-the-whip” effect, resulting in a rollover.
2. A trailer to straighten out.
3. Confusion over which lane the driver is hoping to use.
4. Other drivers to reduce their speed.
1. A “crack-the-whip” effect, resulting in a rollover.
2. A trailer to straighten out.
3. Confusion over which lane the driver is hoping to use.
4. Other drivers to reduce their speed.
A “crack-the-whip” effect, resulting in a rollover.
How many air lines does a combination vehicle have?
1. One
2. Two
3. Three
4. Four
1. One
2. Two
3. Three
4. Four
Two
A lightly-loaded combination vehicle will stop more slowly than a fully-loaded vehicle because:
1. The stiff suspension springs and strong brakes will have high traction.
2. The stiff suspension springs and strong brakes will have low traction.
3. The brakes only operate when a trailer reaches a minimum weight.
4. The suspension springs only operate when a trailer reaches a minimum weight.
1. The stiff suspension springs and strong brakes will have high traction.
2. The stiff suspension springs and strong brakes will have low traction.
3. The brakes only operate when a trailer reaches a minimum weight.
4. The suspension springs only operate when a trailer reaches a minimum weight.
The stiff suspension springs and strong brakes will have low traction.
Driving a combination vehicle ____ than driving a single vehicle.
1. Is easier
2. Requires more driving skill
3. Is better for training
4. Is safer in inclement weather
1. Is easier
2. Requires more driving skill
3. Is better for training
4. Is safer in inclement weather
Requires more driving skill
To help prevent a rollover, cargo should be:
1. Placed as high as possible inside the trailer.
2. Placed as low as possible inside the trailer.
3. Placed on the passenger side of the trailer.
4. Placed on the driver’s side of the trailer.
1. Placed as high as possible inside the trailer.
2. Placed as low as possible inside the trailer.
3. Placed on the passenger side of the trailer.
4. Placed on the driver’s side of the trailer.
Placed as low as possible inside the trailer.
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.
If a load is placed on one side of a trailer, the trailer:,
1. May lean, and could result in a rollover.
2. May add extra support during turns.
3. Have improved braking.
4. Have improved steering.
1. May lean, and could result in a rollover.
2. May add extra support during turns.
3. Have improved braking.
4. Have improved steering.
May lean, and could result in a rollover.
When lightly loaded, combination vehicles:
1. Should not be driven.
2. Have reduced braking capabilities.
3. Will not rollover.
4. Should be loaded with most of the weight in the rear of the trailer.
1. Should not be driven.
2. Have reduced braking capabilities.
3. Will not rollover.
4. Should be loaded with most of the weight in the rear of the trailer.
Have reduced braking capabilities.
A tractor protection valve is:,
1. A device that keeps air in the tractor or truck brake system, should the trailer break away or develop a bad leak.
2. A device that prevents theft.
3. A device that controls fuel levels.
4. A device that allows the battery to recharge efficiently.
1. A device that keeps air in the tractor or truck brake system, should the trailer break away or develop a bad leak.
2. A device that prevents theft.
3. A device that controls fuel levels.
4. A device that allows the battery to recharge efficiently.
A device that keeps air in the tractor or truck brake system, should the trailer break away or develop a bad leak.
Showing the first 10 terms. Use the flashcard player above to study all 20 terms!