CDL Combination Vehicles Practice Test Results

Question 1
88% answer correctly
Large combination vehicles that are empty take __________ time to stop than those that are fully loaded.
More
Less
Half
The same amount of
Question 2
54% answer correctly
The service line disconnects while you`re driving. What will happen?
The low air pressure warning light will come on
The emergency trailer brakes will activate
Nothing
The emergency tractor brakes will activate
Question 3
87% answer correctly
In which of the following circumstances should the valve hand be used to park a combination vehicle?
When unloading
When parking for less than 10 minutes
When parked on a grade
Never