Combination Vehicles Test #2 (en)

To prevent a rollover, a driver can do two things: 1) Drive slowly when turning, and 2):

To unlock the fifth wheel, you need to move the locking lever to the ______ position.

How much room should there be between the top and bottom parts of the fifth wheel after coupling?

When you have supplied air to the trailer, you should check that the air lines are not crossed and that the brakes are functioning. You can do this by:

What do glad hands usually connect?

A major leak has occurred in the service line, so you put the brakes on. The service air will escape and cause:

The hand valve should be used:

After connecting with a semitrailer, where should you place the iron trailer supports before you start driving?

Which of these vehicles will follow the wider path while turning because of off-tracking?

What are the potential consequences when a driver mixes up the air hose connections when connecting to an old trailer?

How can you check if the connection between the tractor and the semitrailer is safe and secure?

What happens if you cross the air lines when hooking up to an old trailer?

Air and electrical lines from the tractor to the trailer should be:

When the iron trailer supports are up and the trailer sits on the tractor, make sure that :

If the emergency air line in your vehicle breaks or comes apart while driving, this will make the:

It is common for combination vehicles to have colored air lines to prevent the lines from getting mixed up. The emergency line is _____ , the service line is _____.

When uncoupling a full trailer, you should lower the landing gear until it:

When making sure the trailer is properly coupled to the truck, the landing gears should be:

In what position should you set the tractor's safety control valve when testing the emergency brakes on a trailer?

While driving a combination vehicle, the service line disconnects, but the emergency line remains connected. What will happen immediately?