ch5 skills for driving trucks and trailers

Question 1

What can cause your trailer to jackknife when you’re backing up?

Answer 1

As your trailer begins to
turn, your tractor must
begin to follow a path
that matches the trailer’s path. If it isn’t you risk jackknifing your vehicle

Question 2

What actions should you take if your trailer whips or swerves?

Answer 2

If your trailer whips or swerves, slow down and stop as soon as it’s safe. Some type of adjustment will be needed to fix whatever has caused your
trailer to whip. You may need to fix a mechanical problem, adjust your load
or change your driving

Question 3

When a coupling device (other than a fifth wheel) is used to join
vehicles in combination, is an additional coupling device such as a
chain or cable required?

Answer 3

When you use any coupling device (other than a fifth wheel) you must also
use chains or metal cables to connect the towed and towing vehicles. These
auxiliary chains or cables must be equal to the strength of the coupling device.

Question 4

Except for a pole trailer, what’s the maximum length permitted for a
draw bar or coupling device between vehicles?

Answer 4

The drawbar or other connection between the motor vehicle and the trailer
may not be more than five metres long unless you’re towing a pole trailer.

Question 5

. When coupling a tractor to a semi-trailer, should the air lines be
connected to the trailer before or after connecting the kingpin to the
fifth wheel?

Answer 5

Some trailers don’t have
spring brakes. With these,
connect the lines and charge
the trailer system and then
apply the trailer brakes
before connecting to the
trailer

Question 6

How do you check that the fifth wheel jaws have locked to the trailer
pin?

Answer 6

• fifth wheel jaws have engaged the
  kingpin * no space or daylight between
  the fifth wheel and the trailer apron
• fifth wheel release handle is in the locked
  position

Question 7

To uncouple a tractor from a semi-trailer, are the air lines unhooked
before or after separating the fifth wheel from the trailer pin?

Answer 7

prior to uncoupling, Disconnect air lines and electrical cable and secure lines to tractor

Question 8

what’s a converter dolly and when’s it used?

Answer 8

When a driver is towing more than one trailer, sometimes a converter dolly is
used. A converter dolly has an axle, a fifth wheel and a hitch. Other devices may
also be used to couple and spread the weight of large loads.

Question 9

For which type of trailer connection are safety chains or cables
required — a fifth wheel connection or pintle hitch connection?

Answer 9

pintle hitch connection

Question 10

What’s the location of a single-unit truck’s central weight distribution
point?

Answer 10

Some trucks, like five-ton freight trucks,
are designed to have approximately 90 per cent of the weight of their cargo
on their rear axle(s) and 10 per cent on the steering axle

Question 11

What could result from placing too much weight over any one set of
wheels or over any one axle?

Question 12

Should the majority of the weight of a load on a single-unit truck
be placed directly behind the cab, slightly ahead of the rear axle or
slightly behind the rear axle?

Question 13

Should the majority of the weight of a load on a semi-trailer be placed
directly over the fifth wheel, at the midway point of the trailer or
directly over the trailer axle?

Question 14

What are the two methods or categories of securing cargo for
transporting?

Question 15

What’s dunnage and why’s it used?

Question 16

What’s the rough guide for spacing tiedowns to secure your load?

Question 17

Why must you compare the weight of your load to the strength of
your tiedowns?

Question 18

What types of loads must be covered with a tarp?

Question 19

. What’s the safe working load of a tiedown?

Question 20

What’s a tiedown assembly?

Question 21

. What’s a load binder and why’s it used?

Question 22

Why must you protect tiedowns from rubbing against your load?

Question 23

What are the dangers in transporting livestock?

Question 24

. What are two types of loads that have a high centre of gravity which,
if not adequately secured to prevent movement or swaying, can
increase the chances of your vehicle rolling over?

Question 25

Why’s it important for you to know the height and width of the vehicle
you’re operating?

Question 26

Why’s it necessary to know the gross vehicle weight (GVW) of the
vehicle you’re operating?

Question 27

What factors determine the maximum allowable GVW for which the
vehicle may be licensed?

Question 28

Do load limit signs at the approach to bridges and structures apply to
all vehicles?

Question 29

Are you allowed to display Wide Load signs on your vehicle when a
wide load isn’t actually being transported?

Question 30

What’s the maximum legal width of a vehicle that’ll be operated on a
highway?

Question 31

What’s the maximum length a load may project to the rear?

Question 32

What’s required before oversize or overweight loads may be
transported?

Question 33

What are the conditions for obtaining a permit to transport overweight
or oversize loads?

Question 34

Are all commercial vehicles required to report to weigh scales?