CDL Doubles and Triples Practice Test Results

Question 1
77% answer correctly
How should the shut off valves be set on a double trailer?
Rear of back trailer open, rear of front trailer closed
Rear of front trailer open, rear of back trailer open
Rear of front trailer closed, rear of back trailer closed
Rear of front trailer open, rear of back trailer closed
Question 2
90% answer correctly
You`re going down a long grade. What`s the best way to prevent your brakes from overheating?
Use engine braking and ride the brakes down the grade
Supplement the air brakes by using the spring brakes
Make sure you`re in the proper gear and use trailer brakes only
Make sure you`re in the proper gear, use engine braking and apply the brakes firmly when necessary
Question 3
79% answer correctly
When should you disconnect the steering axle brakes on the tractor?
When driving in snowy weather
When pulling more than two trailers
Never
When more than one of the trailers you`re pulling has brakes