22. You are driving a set of doubles and a set of trailer wheels goes into a skid. Which of these is most likely to occur?
a. The rig will continue moving in a straight line no matter how much the steering wheel is turned.
b. The rig will stay in a straight line but slide sideways.
c. You will have a trailer jackknife.
d. The engine will stall.
23. You wish to turn right from one two-lane two-way street to another. The truck is too long to turn without swinging wide. You should turn like it shows in:
a. figure A.
b. figure B.
c. figure C.
d. figure D.
24. Which of these statements about speed management and braking is true?
a. Braking distance does not change with speed once the truck is going faster than 40 mph.
b. The total stopping distance of a truck is the distance it takes to stop once the brakes are put on at any speed.
c. You need about four times as much stopping distance at 40 mph as at 20 mph.
d. Posted speed limits on curves are safe for all trucks.
25. You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should:
a. supply air to the trailer system with the tractor and then disconnect the emergency line.
b. make sure that the trailer will roll freely when coupling.
c. hook the trailer electric cord to a portable generator for braking power.
d. park the tractor and first trailer, then roll the second trailer to them.
26. Which of these statements about emergency steering is true?
a. You can almost always stop more quickly than you can turn.
b. You can steer more quickly and safely if you hold the wheel with one hand.
c. Quick steering is safer if you lock the wheels first.
d. If you have traffic on both sides of your vehicle and something is blocking your lane a move to the right may still be best.
27. Which of these statements about managing space to the sides is true?
a. Always keep your vehicle to the right side of your lane.
b. High winds are not a problem for doubles and triples.
c. You should avoid traveling next to others when possible.
d. All of the above.
Answers: (22)c (23)b (24)c (25)a (26)d (27)c
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