CDL Combination Vehicles Practice Test Results

Question 1
73% answer correctly
Where are the shut off valves?
In the tractor cab
At the front of trailers
At the back of trailers
At the back of the tractor
Question 2
73% answer correctly
What is the maximum amount of air that a combination vehicle air brake system should leak in one minute with the brakes released and the engine off?
4 psi
1 psi
2 psi
3 psi
Question 3
90% answer correctly
Which of the following statements about combination vehicles is true?
Driving combination vehicles is no different than driving single commercial vehicles
They`re heavier, longer and require more driving skill than single commercial vehicles
All of these are true
Single commercial vehicles are heavier, longer and require more driving skill than combination vehicles