NC Class B General Knowledge
and Air Brakes permit test (135
questions with verified solutions )
If you are stopped at a roadside rest and found to have a BAC
of .02 you will
a.in trouble with the dispatcher
b. be placed out of service for 24 hours
c. be placed out of service for 48 hours
d. be placed out of service for 72 hours
b. be placed out of service for 24 hours
When roads are slippery, you should:
a.stop and test the traction while going uphills
b. drive alongside other drivers
c. decrease the distance that you look ahead of your vehicle
d. make turns as gently as possible
d. make turns as gently as possible
We have an expert-written solution to this problem!
While driving, you see a small (1 foot square) cardboard box
ahead in your lane. You should:
a. steer around it when it is safe to do so
b. hit it with your vehicle to knock it off the road
c. brake hard to avoid hitting it
d. stop and direct traffic around it
a. steer around it when it is safe to do so
,Which of these pieces of emergency equipment should always be
carried in your vehicle?
a. fire extinguishers
b. warning devices for parked vehicles
c. spare electrical fuses
d. all of the above
d. all of the above
What is counter steering?
a. using the steering axle breaks to prevent over steering
b. steering in the opposite directions from what other drivers
expect you to do
c. turning the wheel in the opposite direction to avoid a traffic
emergency
d. turning the steering wheel counter clockwise
c. turning the wheel in the opposite direction to avoid a traffic
emergency
You do not have a hazardous materials endorsement on your
commercial drivers license. When can you drive a vehicle hauling
hazardous materials?
a. Never
b. only when the shipment will not cross state lines
c. only when the vehicle does not require placards
d. only when a person who has the hazardous materials
endorsement rides in the vehicle
c. only when the vehicle does not require placards
You are driving a new truck with a manual transmission. What
gear will you probably have to use to take a long downhill grade?
a. a lower gear that you would use to climb a hill
b. the same gear you would use to climb the hill
c. a higher gear that you would use to climb the hill
d. none: newer trucks can coast down hills
,a. a lower gear that you would use to climb a hill
High beams should be:
a. dimmed whenever you are within 100 feet of another vehicle
b. used whenever it is safe and legal to do so
c. turned on when an oncoming driver does not dim his or her
lights
d. all of the above
b. used whenever it is safe and legal to do so
An en route inspection should include checking for:
a. cargo door and/or cargo securement
b. tire temp
c. brake temp
d. all of the above
d. all of the above
Where and when should you test the stopping action of your
service brakes?
a. at a special brake testing center only
b. when the vehicle is traveling downhill without a load
c. when the vehicle is moving at about 5 MPH
d. In a parking lot when the vehicle is not moving
c. when the vehicle is moving at about 5 MPH
Stab Braking:
a. should never be used
b. involves locking the wheels
c. involves steady pressure on the brake pedal
d. should only be used on slick roads
b. involves locking the wheels
Retarders:
a. allow you to disconnect steering axle breaks
b. cannot be used on interstate highways
, c. work better at very low rpms
d. can cause the vehicle to skid when the road is slippery
d. can cause the vehicle to skid when the road is slippery
You are driving on a two lane road. An oncoming driver drifts into
your lane and is headed straight for you. Which of these is
generally the best action?
a. Steer to the right
b. Steer onto the left shoulder
c. Hard braking
d. Steer into the oncoming lane
a. Steer to the right
You should avoid driving through deep puddles or flowing water.
But if you must, which of these steps can help keep your brakes
working?
a. Applying hard pressure on both the brake pedal and accelerator
after coming out of the water.
b. Gently pressing the brake pedal while driving through the
water.
c. Turning on your brake heaters.
d. Driving through quickly
b. Gently pressing the brake pedal while driving through the
water.
Which of these statements about brakes is true.
a. Brake drums cool very quickly when the vehicle is moving very
fast.
b. Brakes have more stopping power when they get very hot.
c. The heavier a vehicle or the faster it is moving, the more heat
the brakes have to absorb to stop it.
d. All of the above are true
and Air Brakes permit test (135
questions with verified solutions )
If you are stopped at a roadside rest and found to have a BAC
of .02 you will
a.in trouble with the dispatcher
b. be placed out of service for 24 hours
c. be placed out of service for 48 hours
d. be placed out of service for 72 hours
b. be placed out of service for 24 hours
When roads are slippery, you should:
a.stop and test the traction while going uphills
b. drive alongside other drivers
c. decrease the distance that you look ahead of your vehicle
d. make turns as gently as possible
d. make turns as gently as possible
We have an expert-written solution to this problem!
While driving, you see a small (1 foot square) cardboard box
ahead in your lane. You should:
a. steer around it when it is safe to do so
b. hit it with your vehicle to knock it off the road
c. brake hard to avoid hitting it
d. stop and direct traffic around it
a. steer around it when it is safe to do so
,Which of these pieces of emergency equipment should always be
carried in your vehicle?
a. fire extinguishers
b. warning devices for parked vehicles
c. spare electrical fuses
d. all of the above
d. all of the above
What is counter steering?
a. using the steering axle breaks to prevent over steering
b. steering in the opposite directions from what other drivers
expect you to do
c. turning the wheel in the opposite direction to avoid a traffic
emergency
d. turning the steering wheel counter clockwise
c. turning the wheel in the opposite direction to avoid a traffic
emergency
You do not have a hazardous materials endorsement on your
commercial drivers license. When can you drive a vehicle hauling
hazardous materials?
a. Never
b. only when the shipment will not cross state lines
c. only when the vehicle does not require placards
d. only when a person who has the hazardous materials
endorsement rides in the vehicle
c. only when the vehicle does not require placards
You are driving a new truck with a manual transmission. What
gear will you probably have to use to take a long downhill grade?
a. a lower gear that you would use to climb a hill
b. the same gear you would use to climb the hill
c. a higher gear that you would use to climb the hill
d. none: newer trucks can coast down hills
,a. a lower gear that you would use to climb a hill
High beams should be:
a. dimmed whenever you are within 100 feet of another vehicle
b. used whenever it is safe and legal to do so
c. turned on when an oncoming driver does not dim his or her
lights
d. all of the above
b. used whenever it is safe and legal to do so
An en route inspection should include checking for:
a. cargo door and/or cargo securement
b. tire temp
c. brake temp
d. all of the above
d. all of the above
Where and when should you test the stopping action of your
service brakes?
a. at a special brake testing center only
b. when the vehicle is traveling downhill without a load
c. when the vehicle is moving at about 5 MPH
d. In a parking lot when the vehicle is not moving
c. when the vehicle is moving at about 5 MPH
Stab Braking:
a. should never be used
b. involves locking the wheels
c. involves steady pressure on the brake pedal
d. should only be used on slick roads
b. involves locking the wheels
Retarders:
a. allow you to disconnect steering axle breaks
b. cannot be used on interstate highways
, c. work better at very low rpms
d. can cause the vehicle to skid when the road is slippery
d. can cause the vehicle to skid when the road is slippery
You are driving on a two lane road. An oncoming driver drifts into
your lane and is headed straight for you. Which of these is
generally the best action?
a. Steer to the right
b. Steer onto the left shoulder
c. Hard braking
d. Steer into the oncoming lane
a. Steer to the right
You should avoid driving through deep puddles or flowing water.
But if you must, which of these steps can help keep your brakes
working?
a. Applying hard pressure on both the brake pedal and accelerator
after coming out of the water.
b. Gently pressing the brake pedal while driving through the
water.
c. Turning on your brake heaters.
d. Driving through quickly
b. Gently pressing the brake pedal while driving through the
water.
Which of these statements about brakes is true.
a. Brake drums cool very quickly when the vehicle is moving very
fast.
b. Brakes have more stopping power when they get very hot.
c. The heavier a vehicle or the faster it is moving, the more heat
the brakes have to absorb to stop it.
d. All of the above are true
