Cdl Combination Practice Test Exam Questions With 100% Correct Answers | Verified | Updated

CDL Combination Practice Test Exam Questions with 100% Correct Answers | Verified | Updated You're hooking up a tractor to a semi-trailer and have backed up but are not under it. What should you do before backing under the trailer? - Correct Answer-Hook up the emergency and service air lines. After pushing in the trailer supply valve, you should not move the tractor until air system is? - Correct Answer-At normal pressure There are two things you can do to prevent a rollover. They are: Keep the cargo as close to the ground as possible, and: - Correct Answer-Reduce speed before entering turns. With the engine off and the brakes released, a combination vehicle air brake system shouldn't leak more than how many psi in one minute? - Correct Answer-3 psiThe fifth wheel locking lever isn't locked after the jaws close around the kingpin. This means that: - Correct Answer-The coupling is not correct and should be corrected before driving the coupled unit. You cross the air lines when hooking up to an old trailer. What will happen? - Correct Answer-If the trailer has no spring brakes, you could drive away, but you wouldn't have trailer brakes. How far should