CDL Combination Vehicles Practice Test Results

Question 1
96% answer correctly
To reduce the risk of rollover when driving a combination vehicle:
Concentrate the cargo to one side of the rig
Concentrate the cargo at the front and back of the rig
Keep the cargo as far away from the ground as possible
Keep the cargo as close to the ground as possible
Question 2
91% answer correctly
As the driver of a combination vehicle what is one thing that you can do to prevent a rollover?
Keep the air brakes properly pressurized
Keep both hands on the steering wheel
Make sure your load isn`t centered
Slow down before entering a curve
Question 3
56% answer correctly
The emergency air line:
Carries air controlled by the footbrake or trailer handbrake
Supplies air to the trailer air tanks
Supplies air to the footbrake or trailer handbrake
Provides a backup route from the air compressor to the air tanks