Arizona CDL Knowledge Test Class B: Practice Test
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When driving on a wet road, you should reduce your speed by:
About one-half.
About one-third.
About one-quarter.
You may:
Have more than one license if one is for business purposes.
Have more than one license if they are issued by different states.
Not have more than one license.
What should you do if your vehicle gets stuck on railroad tracks?
Stay in the vehicle.
Get out of the vehicle and call for assistance.
Continue trying to get your vehicle off the tracks until you are successful.
If planning to change lanes, your mirrors should:
Not be checked.
Be checked as usual.
Be checked more often than usual.
If the brakes pull to one side or the other when used:
They are working properly.
They need to be checked.
They will be the most effective.
In very hot weather, tires should be checked regularly because:
They may melt.
Air pressure may increase with the temperature.
The tread wears down more quickly than in cooler weather.
Roads are especially slippery right after it begins to rain because:
The water mixes with oil and grease on the road.
Tires are not made to drive in wet weather.
The water yet hasn't absorbed the dirt and grease.
When applying your brakes, the vehicle should:
Pull to one side.
Squeak.
Not pull to either side.
You should test the low pressure warning signal by:
Turning on the engine and applying the trailer hand brake.
Rapidly pressing and releasing the brake pedal.
Removing wheel chocks and disengaging the parking brake.
Air brakes use ____ to function.
Compressed air
Liquid air
Nitrogen
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