General Knowledge
What does the term "gross vehicle weight rating" (GVWR) mean?
The maximum weight a vehicle can safely carry
What is the purpose of a brake can?
To convert air pressure into mechanical force for braking
This type of surge happens side to side and can cause a rollover if not controlled?
Side-to-side surge (sloshing)
What are the visibility challenges with double and triple trailers?
Limited visibility, especially in blind spots
What is the role of the tractor in a combination vehicle?
To provide power to pull the trailer
What is involved in the license test for a CDL A?
A road test, yard skills test, and pre-trip inspection
Describe the function of the brake pedal in an air brake system?
To apply and release the service brakes
How does sloshing affect the handling of a tanker?
It can affect the vehicle's handling and stability
How do you manage braking with double trailers?
Apply brakes gradually and break early
How do you perform a pre-trip inspection on a combination vehicle?
Walk around, under hood, in cab
What are the consequences of driving without a valid CDL?
Fines, penalties, possible jail time
What should you do if the air pressure drops too low?
Stop vehicle as soon as possible
When unloading a tanker with multiple compartments, you must be careful to maintain this for safety?
Balance and stability
What are the regulations for towing multiple trailers?
Follow state and federal regulations
What is the most common weight limits for combination vehicles under federal regulations?
100,000 lbs total weight limit
Explain the importance of a logbook for commercial drivers?
To track driving hours and ensure compliance with regulations
Explain the difference between service brakes and emergency brakes?
Service brakes are for normal operation; emergency brakes activate when there is a sudden drop or loss of air pressure
What is the purpose of a vapor recovery system in tankers?
To capture vapors and prevent pollution
Explain the importance of using a proper hitch in double trailer operations?
To ensure safe and secure connections
Explain the role of the trailer in a combination vehicle?
To transport cargo safely
What is the purpose of the Hazardous Materials Endorsement?
To transport hazardous materials safely
What is the significance of the air pressure gauge?
To indicate the air pressure in the system
How does weight distribution affect the vehicles on a tank vehicle?
Proper weight distribution is crucial for stability
What are the impacts of wind on double and triple trailer driving?
High-profile trailers are more affected by wind
How do you handle a jackknife situation in combination vehicles?
Slow down and steer into the skid