2026 Idaho DMV Double Endorsement Test 1 (20 Questions And Complete Answers)
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Alcohol evaporators are:
1. Illegal.
2. Used to add alcohol to braking systems to prevent items from freezing.
3. Only allowed on vehicles carrying hazardous materials.
1. Illegal.
2. Used to add alcohol to braking systems to prevent items from freezing.
3. Only allowed on vehicles carrying hazardous materials.
Used to add alcohol to braking systems to prevent items from freezing.
Rust around wheel nuts may mean:
1. It rained recently.
2. The nuts are loose.
3. The nuts are too tight.
1. It rained recently.
2. The nuts are loose.
3. The nuts are too tight.
The nuts are loose.
If the emergency air line loses pressure:
1. The service brakes will activate.
2. The tractor protection valve will close.
3. The rear trailer will detach from the combination.
1. The service brakes will activate.
2. The tractor protection valve will close.
3. The rear trailer will detach from the combination.
The tractor protection valve will close.
If a vehicle's Anti-Lock Braking System (ABS) is malfunctioning:
1. The vehicle will have no brakes.
2. The vehicle will still be able to brake.
3. The vehicle will likely travel faster than usual.
1. The vehicle will have no brakes.
2. The vehicle will still be able to brake.
3. The vehicle will likely travel faster than usual.
The vehicle will still be able to brake.
If there is ice on the front of your side mirror:
1. You should exit the roadway.
2. You can expect ice to be on the roadway.
3. There will not be ice on the roadway.
1. You should exit the roadway.
2. You can expect ice to be on the roadway.
3. There will not be ice on the roadway.
You can expect ice to be on the roadway.
Alcohol can be removed from your system:
1. By exercising.
2. By drinking coffee.
3. By waiting.
1. By exercising.
2. By drinking coffee.
3. By waiting.
By waiting.
If a trailer begins to skid, it is best for the driver to:
1. Release the brakes.
2. Accelerate.
3. Quickly turn the steering wheel in one direction, then in the other.
1. Release the brakes.
2. Accelerate.
3. Quickly turn the steering wheel in one direction, then in the other.
Release the brakes.
Rolling backward when beginning to accelerate is dangerous because:
1. The transmission may be damaged.
2. The truck is not made to go backwards.
3. You may hit a vehicle behind you.
1. The transmission may be damaged.
2. The truck is not made to go backwards.
3. You may hit a vehicle behind you.
You may hit a vehicle behind you.
When a vehicle is started, the coolant temperature should:
1. Decrease.
2. Rise slowly.
3. Hold steady.
1. Decrease.
2. Rise slowly.
3. Hold steady.
Rise slowly.
Before a trip, you should make a visual check of a coupling to ensure that:
1. There is a space between the upper and lower fifth wheel.
2. The kingpin is free from all dirt and dust.
3. The locking jaws are closed on the kingpin.
1. There is a space between the upper and lower fifth wheel.
2. The kingpin is free from all dirt and dust.
3. The locking jaws are closed on the kingpin.
The locking jaws are closed on the kingpin.
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