Doubles/Triples 2 Quiz – Brewsterstransport

Created on October 30, 2023

Doubles/Triples 2

1 / 20

he first step in uncoupling a converter dolly is

A) to slowly pull clear of it.

B) to disconnect the safety chains.

C) to lower its landing gear.

2 / 20

A converter dolly consists of a ______ wheel and ________ axles.

A) fifth; two or three

B) fifth; one or two

C) third; two or three

3 / 20

The crack the whip effects trucks with trailers. Which of the following is most likely to tip over?

A) The rear trailer of a triple

B) The rear trailer of a double

C) A full trailer behind a truck

4 / 20

Which of these statements about seeing ahead is true?

A) At highway speed you should look up to 1/4 mile ahead of your truck

B) Many drivers do not look far enough ahead of their truck

C) Good drivers shift their attention back and forth, near and far

D) All answers are correct

5 / 20

Why must you inspect your double or triple combination vehicle more extensively than a vehicle with only one such semitrailer?

A) Its design makes it more likely to have problems.

B) There are more critical parts to check.

C) The types of cargoes it carries make it more likely to have problems.

6 / 20

Antilock brakes (ABS) have been required on all converter dollies built since

A) March 2003.

B) March 1998.

C) March 2000.

7 / 20

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 to move 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) A trailer jackknife

8 / 20

Converter dollies:

A) Have little braking power because they are small

B) Often do not have spring brakes

C) Usually need a glad hand converter

9 / 20

The best way to keep brakes from overheating while going down a steep grade is to:

A) Use only the trailer brakes

B) Go 5 MPH below your safe speed

C) Use stab braking

10 / 20

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

A) Counter steering is easier with doubles / triples than with most other vehicles

B) Doubles / triples flip over from quick steering movement easier than many other vehicles

C) You should put on the brakes at the same time you perform quick steering movements

11 / 20

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

A) Wheel chocks

B) The trailers spring brakes and emergency air brakes

C) Either answer can be correct

12 / 20

When you pull two or three trailers, you should look farther ahead because

A) both of the above are true.

B) aggressive drivers may cause trouble for you on the road.

C) the vehicle is more likely to roll over or jackknife.

13 / 20

During an inspection of a double or triple combination, check the usual things for any combination vehicle and check

A) the fifth wheel and the landing gear.

B) the shut-off valves, the converter dolly or dollies, and the air brakes on all trailers.

C) the trailers and the radios in the tractor.

14 / 20

If you must drive through deep puddles or flowing water, which of these should you not do?

A) Increase engine rpm

B) Use a lower gear

C) Drive though quickly

D) Gently pressing the brake pedal while driving through the water.

15 / 20

Before you can supply air to the air tanks of a second trailer you need to:

A) Open the shut off valves at the rear of both trailers

B) Close the shut off valves at the rear of both trailers

C) Open the shut off valves at the rear of the first trailer, and close the shut off valves at the rear of the second trailer

16 / 20

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

A) All answers are correct

B) Right after starting the lane change

C) After signaling the change

D) After completing the lane change

17 / 20

Which of these statements about handling of doubles and triples is true?

A) The rear trailer of a 100-foot triple is less likely to turn over than a single semi-trailer due to the crack the whip effect

B) A triple rig can stop quicker than a 5-axle tractor semi-trailer due to off tracking

C) A sudden movement with the steering wheel can result in a tipped over rear trailer

18 / 20

Which of these statements about managing space to the sides is true?

A) High winds are not a problem for doubles and triples

B) Always keep your vehicle to the right side of your lane

C) You should avoid traveling next to others when possible

19 / 20

Some large trucks have convex or spot mirrors.

A) Make things look smaller and farther away than the really are

B) Do not need to be checked as often as flat mirrors because they show a larger area

C) Are against the law in most states

20 / 20

You are driving a 100-foot twin trailer combination at 50 mph. The road is dry, and visibility is good. You should keep at least _____ seconds of space ahead of you.

A) 12

B) 10

C) 11

Your score is

The average score is 0%

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