CDL Double-Triple
Trailers Test

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

Select the true statement about empty trucks:

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

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

You should_____to uncouple the converter dolly.

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

What do you check when doing a visual inspection of the coupling?

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

You should keep a minimum of ____between another vehicle and the double trailer with 100 ft truck driving at 30 mph.

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

What should you check for when inspecting a converter dolly?

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

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

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

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

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

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

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

The correct trailer height when coupling the rear trailer is:

What do yo uneed to do before supplying air to the air tanks of the second trailer?

The best way to have control on curves is:

Which trailer should be the first one after the tractor?

Which is more likely to tip over due to the crack the whip effect?

What do you need to do to supply air to the air tranks of the second trailer?

Why should you test the tractor protection valve?

Do converter dollies have spring brakes?

Select the true statement in regards to unhooking the pintle hook while the converter dolly is still under the trailer.

Your rig should be parked on__to uncouple double trailers.

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

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

What should you hear when you have the hand valve on and are testing the trailer brakes by opening the service air line at the back of the trailer?

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

Select the true statement in regards to converter dollies:

Select the true statement about converter dollies:

How do you make sure the trailer height is correct before coupling?

Which trailer is most likely to tip over due to the crack the whip effect?

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

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?

Select the statement of what you should not do if you are required to drive through flowing water or deep puddles.

Select the true statement about seeing ahead.