Deck 4: Class A

Question 1

The acceptable air pressure loss in a combination vehicle with a fully charged air system is?

A)Less than 3 psi a minute
B)Less than 2 psi a minute
C)Less than 4 psi a minute
D)None of the above

Answer 1

Less than 3 psi a minute

Question 2

Class A drivers require more training because combination vehicles are:

A)Heavier
B)At a greater risk for rollovers
C)Longer in length
D)All of the above

Answer 2

All of the above

Question 3

To obtain an endorsement for doubles and triples, applicants must show specific knowledge concerning which of the following:

A)Proper placement of the heaviest trailer
B)Correct knowledge for hooking up trailers
C)Special knowledge on steering, off tracking, braking, etc. as it applies to operating doubles/triples
D)Correct knowledge for unhooking trailers
E)All of the above

Answer 3

All of the above

Question 4

When connecting doubles, drivers connect the emergency line and charge the trailer air tank. This causes what to happen?

A)Automatically sets the trailer's emergency brakes
B)Automatically sets the tractor's brakes
C)Automatically sets both the tractor and the trailer's brakes
D)None of the above

Question 5

When attaching the converting dolly to the lead trailer through the ring hitch, drivers should:

A)Connect the air hose to the converter dolly.
B)NOT connect the air hose to converter dolly.
C)Ignore the air hose for now, there will be time to complete this action later.
D)None of the above

Question 6

When connecting doubles or triples, one of the last steps is to check the air pressure for the last trailer's air brakes. You do this by:

A)Taking a quick test drive and applying the brakes
B)Disengaging one air hose and listening for leaks
C)Pushing the "air supply" button on the rear of the last trailer to see if it has pressure
D)None of the above

Question 7

The 45° angle reverse maneuver is often the preferred method for backing into a loading dock or parking space. When performing this action, drivers should:

A)Angle the trailer toward the passenger side at a 45°angle.
B)Angle the trailer toward the driver's side at a 45° angle.
C)Rely on the right side mirror more than the left side mirror.
D)None of the above

Question 8

When hooking up air supply lines between tractor and trailer, the air lines:

A)Do not have to match according to color code.
B)Should match, red to red, blue to blue.
C)Should match red to blue, blue to red.
D)The air lines are not color coded.

Question 9

When inspecting gladhands, drivers should look for which of the following defects:

A)Missing rubber grommets
B)Cracked grommets
C)Defective or broken gladhand casings
D)All of the above

Question 10

Once the tractor and trailer have been connected, the driver should immediately perform which of the following?

A)Push test
B)Pull test
C)No further action is needed.
D)Test drive the tractor and trailer around the parking lot.

Question 11

If drivers notice that the trailer front edge is too low for their tractor's fifth wheel to slide under, they should:

A)Continue to ease back, but do so very slowly.
B)Drain some air from tractor air ride bags.
C)Add some air to the tractor air ride bags.
D)Lift the trailer by using its landing gear.

Question 12

The control switch for adding or removing air from the air ride bags is located:

A)On the rear of the tractor, next to the fifth wheel
B)On the bottom front of the trailer
C)Inside the engine compartment
D)Inside the tractor cab

Question 13

Which of the following statements is true about longer vehicles, such as those with sleeper compartments?

A)When making right turns, these vehicles need more room.
B)When making right turns, these vehicles need less room.
C)There is no difference in turning radius between normally sized tractor trailers and long wheelbase tractor trailers.
D)None of the above is a true statement.

Question 14

When pulling doubles or triples, which trailer is more likely to roll over?

A)The first trailer
B)The second trailer
C)The last trailer
D)There is no difference, all are equally susceptible to rollovers.

Question 15

When making a left turn in a combination vehicle, you should:

A)Start your turn when you reach the center of the intersection.
B)Start your turn before you reach the center of the intersection.
C)Start your turn after you pass the center of the intersection.
D)None of the above