Combination Vehicles Practice Test | Pennsylvania 2024 #2 Page 2 of 3
Train for FREE online with our Pennsylvania CDL combination vehicle test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a PA combination license in 2024, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements for issuing a combination license may vary from state to state.
8 . Fully-loaded rigs:
Because the weight of cargo gives them a higher center of gravity, fully-loaded rigs are 10 times more likely to roll over in a crash than empty rigs.
9 . Combination vehicles:
Combination vehicles are usually heavier and longer than single commercial vehicles. For these reasons, they usually require more driving skill than single commercial vehicles.
10 . When connecting a converter dolly to a second or third trailer, the trailer height should be:
When connecting a converter dolly to a second or third trailer, the trailer height should be correct. It should be slightly lower than the center of the fifth wheel.
11 . When glad hands are coupled, the seals should be pressed together at an angle of:
When coupling, be sure to couple the proper glad hands. When glad hands are connected, the seals should be pressed together at a 90-degree angle.
12 . After coupling, there should be ____ between the upper and lower fifth wheel.
Before a trip, be sure to inspect all couplings. There should be no space between the upper and lower fifth wheel.
13 . When backing a trailer, how should you turn the steering wheel?
When backing with a trailer, turn the top of the steering wheel in the direction opposite of where you want to go. Once the trailer begins turning, you should then switch the direction of the steering wheel to follow the trailer.
14 . What does the trailer air supply control look like?
On newer vehicles, the trailer air supply control is an eight-sided red knob. It's used to control the tractor protection valve.
See the exact questions that will be on the 2024 Pennsylvania DMV exam.
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