1|Page
Kentucky CDL Permit Study Guide Actual 2025 Exam
with Questions and Answers () 100%
Guarantee Pass
What is the most important reason for doing a vehicle inspection? -
..(ANSWER)...safety
What things should you check during a trip? - ..(ANSWER)...instruments, air
pressure gauge, temp gauge, pressure gauge, ammeter/voltmeter, mirrors, tires,
cargo/ cargo covers, lights.
Name some key steering system parts. - ..(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 - ..(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? - ..(ANSWER)...Fire
extinguisher, spare electrical fuses , warning devices for parked vehicles.
What is the minimum tread depth for front tires? For other tires? -
..(ANSWER)...4/32" for front tires, 2/32" on other tires
,2|Page
Name some things you should check on the front of your vehicle during the walk
around inspection? - ..(ANSWER)...Condition of front axle, Condition of steering
system, Condition of windshield, Lights and reflectors.
What should wheel bearing seals be checked for? - ..(ANSWER)...leaks
How many red reflective triangles should you carry? - ..(ANSWER)...3 red
reflective triangles
How do you test hydraulic brakes for leaks? - ..(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? -
..(ANSWER)...So it cannot be started or running during the walk around inspection
Why should you back toward the driver's side? - ..(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? -
..(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
, 3|Page
When backing, why is it important to use a helper? - ..(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?
- ..(ANSWER)...a signal for STOP
What are the two special conditions where you should downshift? -
..(ANSWER)...before starting down a hill, before entering a curve
When should you downshift automatic transmissions? - ..(ANSWER)...when going
down grades/downhill
Retarders keep you from skidding when the road is slippery. True or False? -
..(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? - ..(ANSWER)...Use engine speed
(rpm) or road speed (mph)
How far ahead does the manual say you should look? - ..(ANSWER)...12-15
seconds ahead
Kentucky CDL Permit Study Guide Actual 2025 Exam
with Questions and Answers () 100%
Guarantee Pass
What is the most important reason for doing a vehicle inspection? -
..(ANSWER)...safety
What things should you check during a trip? - ..(ANSWER)...instruments, air
pressure gauge, temp gauge, pressure gauge, ammeter/voltmeter, mirrors, tires,
cargo/ cargo covers, lights.
Name some key steering system parts. - ..(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 - ..(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? - ..(ANSWER)...Fire
extinguisher, spare electrical fuses , warning devices for parked vehicles.
What is the minimum tread depth for front tires? For other tires? -
..(ANSWER)...4/32" for front tires, 2/32" on other tires
,2|Page
Name some things you should check on the front of your vehicle during the walk
around inspection? - ..(ANSWER)...Condition of front axle, Condition of steering
system, Condition of windshield, Lights and reflectors.
What should wheel bearing seals be checked for? - ..(ANSWER)...leaks
How many red reflective triangles should you carry? - ..(ANSWER)...3 red
reflective triangles
How do you test hydraulic brakes for leaks? - ..(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? -
..(ANSWER)...So it cannot be started or running during the walk around inspection
Why should you back toward the driver's side? - ..(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? -
..(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
, 3|Page
When backing, why is it important to use a helper? - ..(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?
- ..(ANSWER)...a signal for STOP
What are the two special conditions where you should downshift? -
..(ANSWER)...before starting down a hill, before entering a curve
When should you downshift automatic transmissions? - ..(ANSWER)...when going
down grades/downhill
Retarders keep you from skidding when the road is slippery. True or False? -
..(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? - ..(ANSWER)...Use engine speed
(rpm) or road speed (mph)
How far ahead does the manual say you should look? - ..(ANSWER)...12-15
seconds ahead
