Vehicle Inspections
What is the most important reason to inspect your vehicle?
Safety for drivers and the public
What should be your scanning distance in a CMV?
12-15 seconds
What is something that you can use to quickly exit the highway in the case of an emergency?
Escape ramp
All buses, taxi, and other vehicles hauling passengers for hire or at least must carry a chemical type fire extinguisher of at least....
One quart
What is the parking and emergency brake held back by?
Bonus: What kind of pressure are you using during you normal driving?
Spring pressure
Bonus: Air pressure
What is the minimum tread depth for a front tire on a commercial motor vehicle?
4/32 of an inch
What should you do when you are being tailgated?
Increase the distance in front of you to allow the driver to pass.
If your escape route involves driving onto the shoulder what should you be prepared for?
A change in the road surface
When towing another vehicle, what is the greatest distance that can be between you and the vehicle being towed?
Bonus: What flag should be used when towing another vehicle?
(100 pts)
15 feet
Bonus: White flag
Why does it take air brakes longer to stop the hydraulics?
Takes more time to flow through the lines than hydraulic fluid
What is the minimum thickness allowed for a CMV's brake linings?
One quarter of an inch
Where should you place your triangles if you are stopped for more than ten minutes on the shoulder of a divided highway?
10 feet, 100 feet, 200 feet to the rear.
What does a high center of gravity mean?
Vehicle is more likely to tip over on fast turns because it is higher from the ground.
What is the maximum number of trailers that you can haul in a combination?
Three trailers.
What is emergency stab braking?
It's when you press on the brake pedal as hard as you can, release the brakes when the wheels lock, and when the wheels start rolling put on the brakes fully again.
What are the three emergency items you must keep in your truck at all times?
What are, 3 components that make up the total stopping distance of a CMV?
Perception distance, reaction distance, and braking distance.
During the summer, what are some hazards that may be on the road?
Fatigued drivers coming from vacation, construction work zones, and overloaded cars with poor visibility
Passenger for hire or vehicles hauling hazardous material must stop within how many feet of a railroad crossing?
No more than 15 feet and no less than 50 feet.
15-50 feet
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:
Release the spring emergency/ parking brakes to move a short distance.
What is the name of the device used in air brake systems that injects alcohol into the compressed air to prevent freezing in cold weather that you must check during your pre-trip?
Alcohol evaporator?
What should your following distance be if you're driving a 60-foot rig at 55 mph?
7 seconds.
On an open road your following distance should be four seconds.
What should be your following distance in bad weather?
6 to 8 seconds
Clearance lights are required by state law for trucks or buses if the width is...
What is the leakage rate for a combination vehicle engine off and brakes released (foot off brake)?
Bonus: Leakage rate rate with engine off and with your foot on the brakes
3
Bonus: 4