Doubles Tripes Test #4

Driving a truck with doubles or triples trailers requires a driver to:

How can yoube sure you suppliedair to a second trailer?

When uncoupling the rearsemi trailer, you should lower the converter dolly landing gear:

A converter dolly has:

When driving a truck with more than one trailer, which trailer should be first behind the tractor?

You want to hook you combination to a second trailer that has no spring brakes.  To do this without wheel chocks you should:

You are driving a 100 ft twin trailer combiantion at 50 mph.  The road is dry the visibility is good.  You should keep at least ____seconds of space ahead of you.

The converter dolly air tank drain valve on coupled double and triple trailers should be:

Doubles and triples must be driven very smoothly to avoid rollover or jacknife.  True or False?
True False

If you want to couple a second trailer to you combiantion vehicle, secure it by using the:

What is likely to happen if the pintle hook unlocked with the dolly still under the second trailer?

When inspecting coupled doubles and triples, make sure the pintle hook is:

Which of these are the correct positions for sut off valves in doubles and triples?

A safe speed ona curve for a normal tractor trailer:

You are driving a set of doubles, and a set of trailer wheels goes into a skid.  Which of these is mostly likely to occur?