Start FREE CDL Air Brakes Texas (TX) Test #1 2016 Now:
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Test 1 of 2. Prepare for your CDL Air Brakes Test by using this great drivers ed. Use this FREE CDL Texas (TX) Practice Test to check your knowledge and see if you are ready for the actual exam. The questions are very similar to the real CDL Air Brakes Test. Start your Free CDL Training Now!
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The application pressure gauge shows how much air pressure you:
The spring brakes used on the chambers in a straight truck will bring you to a stop when air pressure drops below ____ psi.
Some air brake systems have an alcohol evaporator. What may happen if you don’t keep the proper level of an alcohol?
Your truck or bus has a dual air brake system. If a low air pressure warning comes on for only one system, what should you do?
Why do you need to drain water from compressed air tanks?
The safety valve is set automatically when pressure is:
What will happen if your truck has a dual air system and one of the systems loses its pressure?
Parking or emergency brakes of trucks and buses can be legally held on by ___ pressure.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:
If you truck has a properly functioning dual air brake system and minimum size air tanks the air pressure should build up from 85 to 100 psi within how may seconds?
How should you check that your service brakes are working properly?
A straight truck or bus air brake system should not leak at the rate of more than ____ psi per minute with the engine off and the brakes released.
During normal driving, spring brakes are usually held back by:
The air compressor stops pumping air at what psi?
The driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks falls below ___psi
Excessive use of the service brakes result in overheating which can lead to:
What is the most common type of foundation found on heavy vehicles?
If you must make an emergency stop, you should brake so you:
What should you do if your truck or bus has a dual air brake system and a low air pressure warning comes on for only one system?
What should you do every day during cold weather if your vehicle has an alcohol evaporator?
The air loss rate for a straight truck or bus with the engine off and the brakes on should not be more than:
The driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks bellow ____ psi
The braking power of the spring brakes:
The air brake lag distance at 55 mph on dry pavement adds about ____ feet.
Total stopping distance for air brakes is longer than for hydraulic brakes due to ___ distance
It is accepted that too much heat caused by using your brakes too often also cause:
Repeatedly partially releasing and pressing the brake pedal may result in:
The brake system that applies and releases the brakes when the driver uses the brake pedal is the ____ brake systemEmergency
A slack adjuster’s free play needs to be adjusted if it is more than about ____how many inches when you pull hard on it?
At what psi an air brake system is fully charged?
The brake pedal in an air brake system:
Under normal conditions in order to engage the parking brakes the driver:
What do all air equipped vehicles have?
With air brakes vehicles, the parking brakes should be used: