Kentucky CDL Permit Study guide with all Correct &
100% Verified Answers |Latest Version |Already
Graded A+
What is the most important reason for doing a vehicle inspection? ✔Correct Answer-safety
What things should you check during a trip? ✔Correct Answer-instruments, air pressure gauge,
temp gauge, pressure gauge, ammeter/voltmeter, mirrors, tires, cargo/ cargo covers, lights.
Name some key steering system parts. ✔Correct Answer-steering wheel, tie rod, steering shaft,
hydraulic fluid reservoir, gear box, pitman arm, drag link, steering knuckle, spindle, steering arm,
power steering cylinder
Name some suspension system defects ✔Correct Answer-spring hangers that allow movement of
axle from proper position, cracked or broken spring hangers, missing or broken leaves in any leaf
spring, leaking shock absorbers, air suspension systems that are damaged and or leaking, any parts
of the suspension or frame that is cracked or broden
What three kinds of emergency equipment must you have? ✔Correct Answer-Fire extinguisher,
spare electrical fuses , warning devices for parked vehicles.
What is the minimum tread depth for front tires? For other tires? ✔Correct Answer-4/32" for front
tires, 2/32" on other tires
Name some things you should check on the front of your vehicle during the walk around inspection?
✔Correct Answer-Condition of front axle, Condition of steering system, Condition of windshield,
Lights and reflectors.
What should wheel bearing seals be checked for? ✔Correct Answer-leaks
How many red reflective triangles should you carry? ✔Correct Answer-3 red reflective triangles
How do you test hydraulic brakes for leaks? ✔Correct Answer-Pump the brake pedal three times,
then apply firm pressure to the pedal and hold for five seconds. The pedal should not move.
Why put the starter switch key in your pocket during the vehicle inspection? ✔Correct Answer-So it
cannot be started or running during the walk around inspection
Why should you back toward the driver's side? ✔Correct Answer-So you can see better
backing toward the right side is very dangerous because you cant see as well.
If stopped on a hill, how can you start moving without rolling back? ✔Correct Answer-partly
engage the clutch before you take your foot off the brake, put on the parking brake whenever
necessary to keep from rolling back
When backing, why is it important to use a helper? ✔Correct Answer-There are blind spots you
won't be able to see.
, What's the most important hand signal that you and the helper should agree on? ✔Correct
Answer-a signal for STOP
What are the two special conditions where you should downshift? ✔Correct Answer-before
starting down a hill, before entering a curve
When should you downshift automatic transmissions? ✔Correct Answer-when going down
grades/downhill
Retarders keep you from skidding when the road is slippery. True or False? ✔Correct Answer-False.
Retarders help slow a vehicle, reducing the need for using your brakes. When your drive wheels have
poor traction, the retarder may cause them to skid. Therefore, you should turn the retarder off
whenever the road is wet, icy, or snow covered
What are the two ways to know when to shift? ✔Correct Answer-Use engine speed (rpm) or road
speed (mph)
How far ahead does the manual say you should look? ✔Correct Answer-12-15 seconds ahead
What are two main things to look for ahead? ✔Correct Answer-Traffic and road conditions
What's your most important way to see the sides and rear of your vehicle? ✔Correct Answer-
mirrors
What does "communicating" mean in safe driving? ✔Correct Answer-signaling your intentions
Where should you place reflectors when stopped on a divided highway? ✔Correct Answer-10 feet
100 feet and 200 feet toward the approaching traffic
What three things add up to total stopping distance? ✔Correct Answer-Perception distance +
Reaction distance + braking distance. = total stopping distance
At 55mph it takes 290 feet or 6 seconds.
If you go twice as fast, will your stopping distance increase by two or four times? ✔Correct Answer-
four times
Empty trucks have the best braking. True or False? ✔Correct Answer-FALSE. The brakes, tires,
springs, and shock absorbers on heavy vehicles are designed to work best when the vehicle is fully
loaded. Empty trucks require greater stopping distances because an empty vehicle has less traction.
What is hydroplaning? ✔Correct Answer-the tires lose their contact with the road and have little or
no traction. You may not be able to steer or brake.
What is "black ice?" ✔Correct Answer-thin layer that is clear enough that you can see the road
underneath it
How do you find out how many seconds of following distance space you have? ✔Correct Answer-
Wait until the vehicle ahead passes a clear landmark, then count off the seconds until you reach the
same spot.
100% Verified Answers |Latest Version |Already
Graded A+
What is the most important reason for doing a vehicle inspection? ✔Correct Answer-safety
What things should you check during a trip? ✔Correct Answer-instruments, air pressure gauge,
temp gauge, pressure gauge, ammeter/voltmeter, mirrors, tires, cargo/ cargo covers, lights.
Name some key steering system parts. ✔Correct Answer-steering wheel, tie rod, steering shaft,
hydraulic fluid reservoir, gear box, pitman arm, drag link, steering knuckle, spindle, steering arm,
power steering cylinder
Name some suspension system defects ✔Correct Answer-spring hangers that allow movement of
axle from proper position, cracked or broken spring hangers, missing or broken leaves in any leaf
spring, leaking shock absorbers, air suspension systems that are damaged and or leaking, any parts
of the suspension or frame that is cracked or broden
What three kinds of emergency equipment must you have? ✔Correct Answer-Fire extinguisher,
spare electrical fuses , warning devices for parked vehicles.
What is the minimum tread depth for front tires? For other tires? ✔Correct Answer-4/32" for front
tires, 2/32" on other tires
Name some things you should check on the front of your vehicle during the walk around inspection?
✔Correct Answer-Condition of front axle, Condition of steering system, Condition of windshield,
Lights and reflectors.
What should wheel bearing seals be checked for? ✔Correct Answer-leaks
How many red reflective triangles should you carry? ✔Correct Answer-3 red reflective triangles
How do you test hydraulic brakes for leaks? ✔Correct Answer-Pump the brake pedal three times,
then apply firm pressure to the pedal and hold for five seconds. The pedal should not move.
Why put the starter switch key in your pocket during the vehicle inspection? ✔Correct Answer-So it
cannot be started or running during the walk around inspection
Why should you back toward the driver's side? ✔Correct Answer-So you can see better
backing toward the right side is very dangerous because you cant see as well.
If stopped on a hill, how can you start moving without rolling back? ✔Correct Answer-partly
engage the clutch before you take your foot off the brake, put on the parking brake whenever
necessary to keep from rolling back
When backing, why is it important to use a helper? ✔Correct Answer-There are blind spots you
won't be able to see.
, What's the most important hand signal that you and the helper should agree on? ✔Correct
Answer-a signal for STOP
What are the two special conditions where you should downshift? ✔Correct Answer-before
starting down a hill, before entering a curve
When should you downshift automatic transmissions? ✔Correct Answer-when going down
grades/downhill
Retarders keep you from skidding when the road is slippery. True or False? ✔Correct Answer-False.
Retarders help slow a vehicle, reducing the need for using your brakes. When your drive wheels have
poor traction, the retarder may cause them to skid. Therefore, you should turn the retarder off
whenever the road is wet, icy, or snow covered
What are the two ways to know when to shift? ✔Correct Answer-Use engine speed (rpm) or road
speed (mph)
How far ahead does the manual say you should look? ✔Correct Answer-12-15 seconds ahead
What are two main things to look for ahead? ✔Correct Answer-Traffic and road conditions
What's your most important way to see the sides and rear of your vehicle? ✔Correct Answer-
mirrors
What does "communicating" mean in safe driving? ✔Correct Answer-signaling your intentions
Where should you place reflectors when stopped on a divided highway? ✔Correct Answer-10 feet
100 feet and 200 feet toward the approaching traffic
What three things add up to total stopping distance? ✔Correct Answer-Perception distance +
Reaction distance + braking distance. = total stopping distance
At 55mph it takes 290 feet or 6 seconds.
If you go twice as fast, will your stopping distance increase by two or four times? ✔Correct Answer-
four times
Empty trucks have the best braking. True or False? ✔Correct Answer-FALSE. The brakes, tires,
springs, and shock absorbers on heavy vehicles are designed to work best when the vehicle is fully
loaded. Empty trucks require greater stopping distances because an empty vehicle has less traction.
What is hydroplaning? ✔Correct Answer-the tires lose their contact with the road and have little or
no traction. You may not be able to steer or brake.
What is "black ice?" ✔Correct Answer-thin layer that is clear enough that you can see the road
underneath it
How do you find out how many seconds of following distance space you have? ✔Correct Answer-
Wait until the vehicle ahead passes a clear landmark, then count off the seconds until you reach the
same spot.
