CDL Combination Vehicles Practice Test Results

Question 1
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
Slow down before entering a curve
Keep both hands on the steering wheel
Make sure your load isn`t centered
Question 2
92% answer correctly
On a combination vehicle what color is the emergency air line?
Black
Yellow
Red
White
Question 3
81% answer correctly
What`s the purpose of the trailer air supply control?
Engages the trailer air brakes
Prevents trailers from becoming decoupled
Supplies air to the trailer
Supplies air to the cab