Cdl permit test
You are testing the stopping action of service brakes on a hydraulic system.Which of
these can mean there is a problem? - Answer- Stopping action is delayed
Which of these statements about downshifting for a long downhill grade is true? -
Answer- : It allows engine compression and friction to help the brakes slow the vehicle
Which of these is a good driving rule for work zones? - Answer- All answers are correct
For an average commercial vehicle, being driven at 55 mph on dry pavement it will take
about ____ to bring the vehicle to a stop. - Answer- The length of a football field
. The distance that you should look ahead of your vehicle while driving amounts to
about ____ at highway speed. - Answer- 1/4 mile
You are checking your wheels and rims for a pre trip inspection. Which of these
statements is true? - Answer- Rust around wheel nuts may mean that they are loose
You do not have a hazardous materials endorsement on your commercial driver's
license. You are asked to haul hazardous materials in a placarded vehicle. You should:
- Answer- Refuse to haul the load
The purpose of a baffle is to - Answer- Control the load surge
You must park on the side of a level, straight, two lane road. Where should you place
the three reflective triangles? - Answer- One within 10 feet of the rear of the vehicle, one
about 100 feet to the rear, and one about 100 feet from the front of the vehicle
What happens when tar heats up? - Answer- It makes the road more slippery
To give adequate warning when passing someone, you should? - Answer- Tap the
electrical horn first
You are checking your steering and exhaust systems for a pre trip inspection. Which of
these statements is true? - Answer- Steering wheel play of more than 10 degrees (2
inches on a 20-inch steering wheel) can make it hard to steer
How often should you check your mirrors? - Answer- Every 8 to 10 seconds
In rain, you should reduce your speed by? - Answer- 1/3
You are checking your brakes and suspension system for a pre trip inspection. Which of
these statements is true? - Answer- All answers are correct and true
,Retarters are not: - Answer- Robotic
You are checking your tires for a pre trip inspection. Which of these statements is true?
- Answer- Tires of mismatched sizes should not be used on the same vehicle
In snow and ice you should reduce your speed by? - Answer- 1/2
When roads are slippery, you should: - Answer- Make turns as gently as possible
Which of these statements about brakes is true? - Answer- The heavier a vehicle or the
faster it is moving, the more heat the brakes have to absorb to stop it
Truck escape ramps: - Answer- Are designed to protect vehicles from damage
You are starting your vehicle in motion from a stop As you apply power to the drive
wheels, they start to spin. You should - Answer- Take your foot off the accelerator
The distance that you should look ahead of your vehicle while driving amounts to about
____ at highway speed. - Answer- 1/4 mile
You should use your mirrors to check: - Answer- All answers
Which of these statements about managing space is true? - Answer- When the road is
slippery, you should keep much more space in front of your vehicle
Your vehicle is in a traffic emergency and may collide with another vehicle if you do not
take action. Which of these is a good rule to remember at such a time? - Answer- Heavy
vehicles can almost always turn more quickly than they can stop
Which of these statements about tires and hot weather driving is true? - Answer- You
should inspect your tires more often because they are more likely to fail
The road you are driving on becomes very slippery due to a glare of ice, which of these
is a good thing to do in such a situation? - Answer- Stop driving and park where it is
safe to do so
Retarders: - Answer- Can cause the vehicle to skid when slippery
You are driving a new truck with a manual transmission. What gear will you probably
have to use to take a long downhill grade? - Answer- A lower gear than you would use
to climb the hill
Which one of these is not part of the check of the engine compartment done for a pre
trip inspection? - Answer- Valve clearance
, A moving vehicle ahead of you has a red triangle with an orange center on the rear.
What does this mean? - Answer- It may be a slow moving vehicle
Controlled braking: - Answer- Is used to keep a vehicle from skidding
How do you correct a rear wheel acceleration skid? - Answer- Stop accelerating
For your safety, when setting out reflective triangles you should - Answer- Hold the
triangles between your body and oncoming traffic
"Reaction distance" is the distance traveled from the time: - Answer- The brain tells the
foot to push the brake pedal to the time the foot actually pushes the pedal
The most common cause of serious vehicle skids is: - Answer- Driving too fast for road
conditions
Which of these statements about vehicle fires is true? - Answer- A burning tire must be
cooled
The parking brake should be tested while the vehicle is: - Answer- Parked
Which of these is a good rule to follow when using a fire extinguisher? - Answer- Aim at
the base of the fire
A drivers trip log, if required: - Answer- Must be shown immediately when an officer
requests it
The load means the following? - Answer- The maximum safe weight a tire can carry at a
specified pressure
Overloading can have a bad effect on? - Answer- All , steering ,speed and braking
The height of the vehicle center of gravity is very important for safe handling. A high
center of gravity means you are more likely to do the following: - Answer- tip over
Too much weight on the steering axle can cause the following: - Answer- ALL, steering
axles failure , problems braking and tire pressure
Under loaded front axles can cause the following: - Answer- Poor traction
What is the average reaction time? - Answer- 60 ft
What is considered to be the average perception distance? - Answer- 60ft
What is considered to be average effective braking distance time? - Answer- 170 ft
You are testing the stopping action of service brakes on a hydraulic system.Which of
these can mean there is a problem? - Answer- Stopping action is delayed
Which of these statements about downshifting for a long downhill grade is true? -
Answer- : It allows engine compression and friction to help the brakes slow the vehicle
Which of these is a good driving rule for work zones? - Answer- All answers are correct
For an average commercial vehicle, being driven at 55 mph on dry pavement it will take
about ____ to bring the vehicle to a stop. - Answer- The length of a football field
. The distance that you should look ahead of your vehicle while driving amounts to
about ____ at highway speed. - Answer- 1/4 mile
You are checking your wheels and rims for a pre trip inspection. Which of these
statements is true? - Answer- Rust around wheel nuts may mean that they are loose
You do not have a hazardous materials endorsement on your commercial driver's
license. You are asked to haul hazardous materials in a placarded vehicle. You should:
- Answer- Refuse to haul the load
The purpose of a baffle is to - Answer- Control the load surge
You must park on the side of a level, straight, two lane road. Where should you place
the three reflective triangles? - Answer- One within 10 feet of the rear of the vehicle, one
about 100 feet to the rear, and one about 100 feet from the front of the vehicle
What happens when tar heats up? - Answer- It makes the road more slippery
To give adequate warning when passing someone, you should? - Answer- Tap the
electrical horn first
You are checking your steering and exhaust systems for a pre trip inspection. Which of
these statements is true? - Answer- Steering wheel play of more than 10 degrees (2
inches on a 20-inch steering wheel) can make it hard to steer
How often should you check your mirrors? - Answer- Every 8 to 10 seconds
In rain, you should reduce your speed by? - Answer- 1/3
You are checking your brakes and suspension system for a pre trip inspection. Which of
these statements is true? - Answer- All answers are correct and true
,Retarters are not: - Answer- Robotic
You are checking your tires for a pre trip inspection. Which of these statements is true?
- Answer- Tires of mismatched sizes should not be used on the same vehicle
In snow and ice you should reduce your speed by? - Answer- 1/2
When roads are slippery, you should: - Answer- Make turns as gently as possible
Which of these statements about brakes is true? - Answer- The heavier a vehicle or the
faster it is moving, the more heat the brakes have to absorb to stop it
Truck escape ramps: - Answer- Are designed to protect vehicles from damage
You are starting your vehicle in motion from a stop As you apply power to the drive
wheels, they start to spin. You should - Answer- Take your foot off the accelerator
The distance that you should look ahead of your vehicle while driving amounts to about
____ at highway speed. - Answer- 1/4 mile
You should use your mirrors to check: - Answer- All answers
Which of these statements about managing space is true? - Answer- When the road is
slippery, you should keep much more space in front of your vehicle
Your vehicle is in a traffic emergency and may collide with another vehicle if you do not
take action. Which of these is a good rule to remember at such a time? - Answer- Heavy
vehicles can almost always turn more quickly than they can stop
Which of these statements about tires and hot weather driving is true? - Answer- You
should inspect your tires more often because they are more likely to fail
The road you are driving on becomes very slippery due to a glare of ice, which of these
is a good thing to do in such a situation? - Answer- Stop driving and park where it is
safe to do so
Retarders: - Answer- Can cause the vehicle to skid when slippery
You are driving a new truck with a manual transmission. What gear will you probably
have to use to take a long downhill grade? - Answer- A lower gear than you would use
to climb the hill
Which one of these is not part of the check of the engine compartment done for a pre
trip inspection? - Answer- Valve clearance
, A moving vehicle ahead of you has a red triangle with an orange center on the rear.
What does this mean? - Answer- It may be a slow moving vehicle
Controlled braking: - Answer- Is used to keep a vehicle from skidding
How do you correct a rear wheel acceleration skid? - Answer- Stop accelerating
For your safety, when setting out reflective triangles you should - Answer- Hold the
triangles between your body and oncoming traffic
"Reaction distance" is the distance traveled from the time: - Answer- The brain tells the
foot to push the brake pedal to the time the foot actually pushes the pedal
The most common cause of serious vehicle skids is: - Answer- Driving too fast for road
conditions
Which of these statements about vehicle fires is true? - Answer- A burning tire must be
cooled
The parking brake should be tested while the vehicle is: - Answer- Parked
Which of these is a good rule to follow when using a fire extinguisher? - Answer- Aim at
the base of the fire
A drivers trip log, if required: - Answer- Must be shown immediately when an officer
requests it
The load means the following? - Answer- The maximum safe weight a tire can carry at a
specified pressure
Overloading can have a bad effect on? - Answer- All , steering ,speed and braking
The height of the vehicle center of gravity is very important for safe handling. A high
center of gravity means you are more likely to do the following: - Answer- tip over
Too much weight on the steering axle can cause the following: - Answer- ALL, steering
axles failure , problems braking and tire pressure
Under loaded front axles can cause the following: - Answer- Poor traction
What is the average reaction time? - Answer- 60 ft
What is considered to be the average perception distance? - Answer- 60ft
What is considered to be average effective braking distance time? - Answer- 170 ft
