Podcast
Questions and Answers
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.
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.
2
Checking your vehicle's suspension does NOT include checking:
Checking your vehicle's suspension does NOT include checking:
You have passed all the requirements for a 'Class B' bus driver's license. Which of these vehicles are you not licensed to drive?
You have passed all the requirements for a 'Class B' bus driver's license. Which of these vehicles are you not licensed to drive?
An en-route inspection should include checking what?
An en-route inspection should include checking what?
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If you can see the rear or front end of the vehicle but can't see the driver, what must you assume?
If you can see the rear or front end of the vehicle but can't see the driver, what must you assume?
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If the air in the tanks is not drained:
If the air in the tanks is not drained:
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What should you do when your vehicle hydroplanes?
What should you do when your vehicle hydroplanes?
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A driver crosses the air lines when hooking up to an old trailer. What will happen?
A driver crosses the air lines when hooking up to an old trailer. What will happen?
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Which of these do not provide extra gears on some trucks?
Which of these do not provide extra gears on some trucks?
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What is the best way to test your vehicle's low air pressure warning signal?
What is the best way to test your vehicle's low air pressure warning signal?
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Buses may carry:
Buses may carry:
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How are buses to handle most railroad grade crossings?
How are buses to handle most railroad grade crossings?
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What is the punishment for using a commercial vehicle for a felony involving the transportation of controlled substances?
What is the punishment for using a commercial vehicle for a felony involving the transportation of controlled substances?
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Which of these is a good rule for backing a straight bus?
Which of these is a good rule for backing a straight bus?
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If you are traveling at 55 mph in a 30 foot vehicle, how many seconds of following distance should you leave?
If you are traveling at 55 mph in a 30 foot vehicle, how many seconds of following distance should you leave?
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If you want to couple a second trailer to your combination vehicle, secure it by using:
If you want to couple a second trailer to your combination vehicle, secure it by using:
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How many different states' Commercial Driver's Licenses can you hold simultaneously?
How many different states' Commercial Driver's Licenses can you hold simultaneously?
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Your bus is disabled. The bus, with riders aboard, may be towed or pushed to a safe place only:
Your bus is disabled. The bus, with riders aboard, may be towed or pushed to a safe place only:
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The new BAC (Blood Alcohol Concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is:
The new BAC (Blood Alcohol Concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is:
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The spring brake used on the chambers in a straight truck will bring you to a stop when air pressure drops below ____ psi.
The spring brake used on the chambers in a straight truck will bring you to a stop when air pressure drops below ____ psi.
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Converter dollies often do have spring brakes.
Converter dollies often do have spring brakes.
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What distance from the fire should you be when using an extinguisher?
What distance from the fire should you be when using an extinguisher?
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In ideal conditions, a truck or bus equipped with an air brake traveling at 55 mph would require what stopping distance?
In ideal conditions, a truck or bus equipped with an air brake traveling at 55 mph would require what stopping distance?
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What is the purpose of West Virginia being part of the Driver License Compact?
What is the purpose of West Virginia being part of the Driver License Compact?
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To check if the converter dolly is securely coupled to the rear trailer you should:
To check if the converter dolly is securely coupled to the rear trailer you should:
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Blocking the cargo to keep it from sliding must be done:
Blocking the cargo to keep it from sliding must be done:
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What happens to tar on the road pavement during hot weather?
What happens to tar on the road pavement during hot weather?
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What can cause a vehicle fire?
What can cause a vehicle fire?
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Study Notes
Air Brake Systems
- A straight truck or bus air brake system must not leak more than 2 psi per minute with the engine off and brakes released.
- Spring brakes in straight trucks activate when air pressure drops below 20 psi.
Vehicle Inspection
- En-route inspection should check tire temperature and cargo securement.
- Vehicle suspension checks exclude tire inspections.
- Converter dollies often have spring brakes, aiding in safe towing.
Licensing and Vehicle Operation
- A Class B bus driver is not licensed to operate a Class A bus.
- Only one state's Commercial Driver's License can be held simultaneously.
Safety Procedures
- When hydroplaning, drivers should release the accelerator.
- If the driver's visibility is obstructed, assume they cannot see you.
- Buses must come to a complete stop before crossing railroad grade crossings.
Cargo and Towing Regulations
- Blocking cargo is essential to prevent sliding, requiring support from the front, back, and side.
- When coupling a second trailer, secure it using both wheel chocks and the trailer's spring brakes if available.
Alcohol and Traffic Violations
- The BAC limit for commercial drivers to be considered intoxicated is 0.04.
- West Virginia participates in the Driver License Compact to ensure traffic violations in other states impact the driving record.
Emergency Situations
- In case of vehicle fires, the most effective strategy is to use an extinguisher from a distance, ideally as far away as possible.
- Short circuits and loose connections are common causes of vehicle fires.
Driving Distances and Maneuvers
- At 55 mph in a 30-foot vehicle, leave a following distance of at least 4 seconds.
- Ideal stopping distance for a truck or bus with air brakes traveling at 55 mph exceeds 450 feet.
Additional Safety Tips
- During hot weather, tar on road surfaces becomes slippery, increasing the risk of accidents.
- Inspection and proper coupling of converter dollies are vital for safe towing, which includes gently pulling against the pin of the second trailer to ensure security.
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Description
Test your knowledge with these flashcards designed for the CDL practice test. Each card contains crucial questions and answers related to air brake systems and vehicle suspension checks. Perfect for anyone preparing for their commercial driving license exam.
