2026 Montana DMV Combination Class A Test 1 (20 Questions And Complete Answers)
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The ____ trailer is the most likely to turn over if a driver takes a turn too quickly.
1. Front
2. Last
3. Middle
1. Front
2. Last
3. Middle
Last
Bobtail tractors are ____ to stop than tractors attached to full semitrailers.
1. Quicker
2. Easier
3. More difficult
1. Quicker
2. Easier
3. More difficult
More difficult
What is a tractor protection valve?
1. A valve to keep air in the brake system should there be a bad leak
2. A valve that prevents the truck from being stolen
3. A valve that prevents the driver from going too fast
4. A valve that prevents the trailer from accidentally being released
1. A valve to keep air in the brake system should there be a bad leak
2. A valve that prevents the truck from being stolen
3. A valve that prevents the driver from going too fast
4. A valve that prevents the trailer from accidentally being released
A valve to keep air in the brake system should there be a bad leak
To lower the risk of a rollover, you should:
1. Load the cargo as far forward as possible.
2. Load the cargo as far back as possible.
3. Load the cargo as low as possible.
4. Stack the cargo as high as possible.
1. Load the cargo as far forward as possible.
2. Load the cargo as far back as possible.
3. Load the cargo as low as possible.
4. Stack the cargo as high as possible.
Load the cargo as low as possible.
When connecting a converter dolly to a second or third trailer, the trailer height should be:
1. Slightly higher than the center of the fifth wheel.
2. Level with the center of the fifth wheel.
3. Slightly lower than the center of the fifth wheel.
4. Next to the center of the fifth wheel.
1. Slightly higher than the center of the fifth wheel.
2. Level with the center of the fifth wheel.
3. Slightly lower than the center of the fifth wheel.
4. Next to the center of the fifth wheel.
Slightly lower than the center of the fifth wheel.
A shut-off valve:
1. Is located on the front of a trailer.
2. Is located on the instrument panel.
3. Prevents air from escaping an air brake system.
4. Should always be open.
1. Is located on the front of a trailer.
2. Is located on the instrument panel.
3. Prevents air from escaping an air brake system.
4. Should always be open.
Prevents air from escaping an air brake system.
During a trip, which shut-off valves should be open?
1. All shut-off valves should be open.
2. The rear shut-off valves should be open.
3. All shut-off valves should be in the open position, except the rear shut-off valves.
4. No shut-off valves should be open.
1. All shut-off valves should be open.
2. The rear shut-off valves should be open.
3. All shut-off valves should be in the open position, except the rear shut-off valves.
4. No shut-off valves should be open.
All shut-off valves should be in the open position, except the rear shut-off valves.
More than half of all accident-related truck driver deaths are caused by:
1. Rollovers.
2. Slippery roads.
3. Other drivers.
1. Rollovers.
2. Slippery roads.
3. Other drivers.
Rollovers.
Starting in which year were newly manufactured trailers required to have ABS?
1. 1972
2. 1987
3. 1998
1. 1972
2. 1987
3. 1998
1998
When traveling more slowly than 40 mph, maintain at least ____ of following distance per every 10 feet of your vehicle.
1. One second
2. Two seconds
3. Three seconds
4. Four seconds
1. One second
2. Two seconds
3. Three seconds
4. Four seconds
One second
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