When coupling doubles, start by

When pulling more than one trailer, which trailer should be the first one behind the tractor?

To uncouple trailers, you should park your rig

If you want to couple a second trailer to your combination vehicle, secure it by using

To check for air flow to the last trailer,

Before backing a dolly under a trailer, you should make sure the fifth wheel jaws are

Which of these is a possible risk if you unlatch the pintle hook while the converter dolly is still under the last trailer?

If you are pulling doubles or triples when a set of trailer wheels goes into a skid, which of these is likely to occur first?

You should check the height of the trailer before connecting a converter dolly to a second or third trailer. The trailer height is correct when

Which of these statements about quick steering movements and doubles/triples is true?

To uncouple the converter dolly from the rear trailer you should

The correct steps before unhooking a converter dolly from the pintle hook of the lead trailer are as follows:

To test the trailer service brakes, you should

The most effective way to stop a skid is to

The first step in restoring traction during a skid is to

Trucks with double or triple trailers

Which of these techniques below will provide the best control on curves?

In order to charge the air tanks of a second trailer, you must

Which of these statements about managing space is true?

In order to pull doubles and triples, at highway speeds, smoothly and to avoid sudden movements, drivers must

How far ahead of your vehicle should you look when driving a double/triple combination at highway speed?

By checking the tractor protection valve, you can reduce the chance of

The order of steps for backing a converter dolly under the rear trailer are as follows:

Before backing a converter dolly under the trailer, the proper height of a trailer is

On trailers equipped to be used in double/triple combinations, you will find air shut-off valves on

If the second trailer does not have spring brakes, and you have no wheel chocks available you should

The first step in coupling doubles is to

You can tell whether the converter dolly is equipped with anti-lock brakes

If a dolly has no parking brake control knob, you can release the dolly's brakes by

The best way to check whether a fifth wheel is completely locked is to

During your walk-around inspection of a double or triple trailer rig, you should be sure the converter dolly air tank drain valves are ______ and the pintle hook is _____.

When connecting a tractor with a sliding fifth wheel to a 28-foot trailer (pup), the fifth wheel should be

When pulling "turnpike doubles" (double 53-foot trailers), the ideal position for the tandems on the FRONT trailer is

When uncoupling a converter dolly from the rear trailer, you find that the converter dolly wheels will not roll. You know that the dolly has no spring brakes or parking brake control knob. You can release the brakes by

When pulling double/triple combinations at highway speed, you should use the trailer brake hand control

The proper order of steps before pulling a dolly from underneath a trailer is as follows.

How much space should be between the upper and lower fifth wheel on the rear trailer?

The most important space to manage around your vehicle when driving at highway speed is

A good way to manage space around your vehicle is to

One popular safe distance rule recommends a following distance/time of one second per 10 feet of vehicle length (add one second for speeds over 40 mph). Based on that rule, the following distance for a sixty-foot rig at sixty miles an hour should be

During, the "crack-the-whip" effect that occurs on trucks with trailers, which is most likely to tip over?

You are driving a 100 foot truck with double trailers at 60 mph. The road is dry. Visibility is good. You should keep at least ____ seconds of space ahead of you.

If you must drive through flowing water or wide stretches of standing water, which of these should you do?

When should you check your mirrors while making a lane change?

Which of these in NOT a good thing to do when driving on slippery roads?