CDL Double-Triple
Trailers Test

The trailer height is correct for connecting a converter dolly to a second trailer when:

To be sure that air is supplied to the second trailer:

Which trailer is more likely to roll over when pulling 3 trailers?

Remember to_____when steering to avoid a crash while driving doubles.

Which trailer should be the first one after the tractor?

Select the true statement about handling triples and doubles:

Start by___when coupling.

What position should the heaviest trailer be in when pulling 3 trailers?

The driver's manual advises you to disconnect the steering axle brake to keep the rig straight:

Double and triple trailers should be driven with care to avoid a rollover or jacknife.

Select the statement that is true in regards to what is required of a driver with a double or triple trailers:

For emergency braking when driving a double trailer and having to use your brakes to avoid a collision is to:

You should check your mirrors while making a lane change:

Select the true statement about convex ("spot") mirrors.

What is most likely to occur when driving double and a set of trailer wheels goes into a skid?

In what position should the shut off valves on a the rear of the front trailer be in on a set of double trailers?

For emergency braking to avoid a crash when driving a double trailer you should:

How much space should you see between the lower and upper fifth wheel when checking the coupling of a converter dolly?

What is most likely to occur when driving a set of doubles and a set of trailer wheels goes into a skid?

Select the true statement about empty trucks:

How should the pintle hook be when backing a dolly under the second trailer?

Select the true statement in regards to managing the space to the sides:

What is the stopping distance for a tractor trailer that is traveling at 55 mph on dry pavement?

Select the action that is not recommended when driving on slipper roads:

How much space should there be between the lower and upper fifth wheel?

How do you hook a combination to a second trailer without spring brakes and without using wheel chocks?

What are the 3 methods for securing a second trailer before coupling?

How do you test the trailer service brakes?

Why is it dangerous to unlock the pintle hook with the dolly still under the rear trailer?

The trailer height is correct for connecting a converter dolly to a second or third trailer when:

What is the minimum amount of distance you should maintain when driving at 50 mph in ideal conditions with a 100 ft twin trailer combination?

The crack-the-whip effect is more likely to cause the front trailer to tip over.

You don't want to use wheel chocks when hooking a combination to a second trailer with no spring brakes. What should you do?

How do you secure a second trailer to your combination vehicle?

In what position should the converter dolly air tank drain valve be in for double trailer combination?

Your rig should be parked on__to uncouple double trailers.

Do converter dollies have spring brakes?

Why should you test the tractor protection valve?

Select the statement that is true in regards to managing space to the sides.

What should you hear when you test the trailer brakes by opening the service air line at rear of trailer with the hand valve on?