General Knowledge
What is the minimum age to apply for a CDL A license in Maine?
16 years old
What is the main function of air brakes in a commercial vcehicle?
To slow or stop the vechicle
A tank vehicle endorsement is required if your vehicle carries this amount or more of liquid or gas.
1,000 gallons or more
What is the difference between a double and a triple trailer?
Double has two trailers; triple has three
What is a combination vehicle?
A vehicle made of a tractor and one or more trailers
Name one requirement for obtaining a CDL A license?
Valid Class C drivers license
what are the two types of air brakes systems?
Air and Air-over-hydraulic
Name one hazard associated with transporting liquid in a tanker?
Liquid sloshing, spills
What is one advantage of using double or triple trailers?
Increased cargo capacity
What is the primary challenge when driving combination vehicles?
Longer stopping distances and increased blind spots
What dose CDL stand for?
Commercial Driver's License
How do you know if your air brakes are functioning properly?
By performing a brake check
What is the importance of baffles in a tanker?
To reduce the sloshing of liquids during transport
What are the special skills required for driving double and triple trailers?
Precise handling and maneuvering skills
How should you adjust your driving when operating a combination vehicle?
Have more following distance and make wider turns
What is the primary purpose of he pre-trip inspection?
To ensure the vehicle is safe to operate
What is the purpose of the air compressor in an air brake system?
To supply air to the brake system.
When driving a tanker, the liquid can move in the tank. This movement is called what?
Surge
Describe the turning radius difference between a single and a double trailer?
Double trailers have a larger turning radius
What is the purpose of the fifth wheel coupling?
To connect the trailer to the tractor
List two documents a driver must carry while operating a commercial vehicle?
Registration and insurance
Describe the steps to properly release the air brakes?
Check air pressure, release the parking brake, and operate brake pedal.
How does the center of gravity affect a tanker vehicle?
It can make the vehicle less stable and harder to control
What are the legal requirements for operating double and triple trailers?
Must have a special endorsement
Explain the significance of weight distribution in combination vehicles?
Important for safety and stability