Combination #1
Combination Vehicles Practice Test | Minnesota 2024 #1 Page 2 of 3
Train for FREE online with our Minnesota 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 MN 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.
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8 . When driving with trailers, you should:
To reduce the risk of tipping over when driving with a trailer, you should steer gently and smoothly. Avoid making sudden movements.
9 . In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when air pressure drops to a level between:
In vehicles equipped with an automatic tractor protection valve, the valve will pop out if air pressure drops to a level between 20 and 45 psi. When the valve pops out, the protection valve will close, stopping the flow of air.
10 . The best way to recognize that your trailer has begun to skid is by:
Listening to the radio.
The earliest and best way to recognize the beginnings of a trailer skid is by seeing the trailer veer off-course in your mirrors.
11 . Before backing your tractor under the trailer, make sure your trailer brakes are:
Dry.
Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. Before backing your tractor under the trailer while coupling, make sure your trailer brakes are locked.
12 . Making a quick lane change while pulling multiple trailers is usually safer than making a quick lane change while pulling only one trailer.
Double and triple combinations are less stable than single commercial vehicles. They are more likely to roll over when being driven with quick movements. Doubles and triples must be driven very smoothly and gently.
13 . When driving a bobtail tractor, you should be aware that:
Bobtails are illegal in most states.
Bobtail tractors are tractors that are not attached to any semitrailers. When operating a bobtail, you should be aware that stopping can be difficult and that it will take a longer distance to bring the bobtail to a complete stop than it would a tractor attached to a loaded semitrailer.
14 . What happens when the wheels of a trailer lock up?
The trailer will stop.
