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 front trailer open, rear of back trailer closed
Rear of back trailer open, rear of front trailer closed
Rear of front trailer closed, rear of back trailer closed
Rear of front trailer open, rear of back trailer open
Question 2
90% answer correctly
You`re going down a long grade. What`s the best way to prevent your brakes from overheating?
Make sure you`re in the proper gear and use trailer brakes only
Use engine braking and ride the brakes down the grade
Make sure you`re in the proper gear, use engine braking and apply the brakes firmly when necessary
Supplement the air brakes by using the spring brakes
Question 3
29% answer correctly
You`re driving a 100 ft. double trailer at 35 mph. If the pavement is dry and weather is good how many seconds of following distance should you maintain?
35
8
10
12