CDL REAL EXAM 2025 COMPLETE 250 QUESTIONS WITH
CORRECT AND DETAILED ANSWERS (VERIFIED 100%)
|ALREADY GRADED A+!!!!.
CDL
What is the most important reason for doing a vehicle inspection? - - ANS - -Safety.
Safety for yourself and other road user.
What things should you check during a trip? - - ANS - -Watch gauges, mirrors, use
your senses to check for problems. Look, listen, and smell. Check critical items when
you stop; tires, wheels, and rims ; brakes, lights and reflectors; brake and electrical
connections to trailer. trailer coupling devices. Cargo securement devices.
Name some key steering system parts. - - ANS - -Control arm, steering shaft, pitman
arm, steering wheel, hydraulic fluid reservoir
Name some suspension system defects - - ANS - -Spring hangers that allow
movement of axle from proper position, cracked or broken spring hangers, missing or
broken leaves in any leaf spring. If one-fourth or more are missing, it will put the
vehicle out of service. Any defect could be dangerous.
What three kinds of emergency equipment must you have? - - ANS - -Fire
extinguisher, spare electrical fuses , warning devices for parked vehicles. ( three
reflective triangles, and at least 6 fuses or 3 liquid burning flares).
,What is the minimum tread depth for front tires? For other tires? - - ANS - -4/32 inch
on every major groove of front tires. 2/32 on other tires. No fabric should show
through the side wall or tread
Name some things you should check on the front of your vehicle during the walk
around inspection - - ANS - -Clean glass, Clean and secure mirrors, door latches or
locks work, condition of tire rims and tires, tight lug nuts, hub oil level is between the
add and full mark, no leaks, springs, shock absorbers, front axle, steering system
condition, condition of brakes, spare tire.
What should wheel bearing seals be checked for? - - ANS - -Hub oil level and no
leaks
How many red reflective triangles should you carry? - - ANS - -Three
How do you test hydraulic brakes for leaks? - - ANS - -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? - - ANS -
-For your saftey
Why should you back toward the driver's side? - - ANS - -So you can see better.
Backing toward the right side or "blind side" is very dangerous because you can't see
as well.
,If stopped on a hill, how can you start moving without rolling back? - - ANS - -Partly
engage the clutch before taking foot off the brake. Put on the parking brake whenever
necessary. Release the parking brake when you have applied enough engine power to
keep from rolling back.
When backing, why is it important to use a helper? - - ANS - -There are blind spots
you cannot see
What is the most important hand signal that you and the helper should agree on? - -
ANS - -Agree on a signal for stop most importantly.
Retarders keep you from skidding when the road is slippery. True or false? - - ANS - -
False
What are the two ways to know when to shift? - - ANS - -Use engine speed (rpm) or
road speed (mph)
When preparing to do a pre-trip inspection you must check to see that the parking
brakes are on and/or chocked - - ANS - -True
When getting in to start the engine and inspect inside of the cab you must? - - ANS - -
Make sure the parking brake is on, Put the gearshift in neutral (or park if automatic).
Start engine and listen for unusual noises.
Look at the gauges- the oil pressure gauge should come up to normal within how
long after starting the engine? - - ANS - -Within seconds
, You should check the following for looseness, sticking, damage or improper settings. -
- ANS - -the steering wheel, accelerator, brake and clutch pads
After inspecting mirrors and windshields for cracks, dirt, illegal stickers or other
obstructions to see, you should... - - ANS - -Clean and adjust as necessary
When checking lights you should... - - ANS - -Make sure that the parking brake is set,
turn off the engine and take the key with you, turn on the headlights and four way
flashers
What is the proper way to hold the steering wheel? - - ANS - -Firmly with both hands
on opposite sides of the wheel.
What are two special conditions where you should down shift - - ANS - -Before
starting down a hill and before entering a curve.
When should you downshift automatic transmissions - - ANS - -When going down
grades.
How far ahead should you look? - - ANS - -Most good drivers look 12 to 15 seconds
ahead
What are two main things to look for ahead? - - ANS - -Traffic coming onto the
highway, into your lane, or turning. Brake lights or turn signals
CORRECT AND DETAILED ANSWERS (VERIFIED 100%)
|ALREADY GRADED A+!!!!.
CDL
What is the most important reason for doing a vehicle inspection? - - ANS - -Safety.
Safety for yourself and other road user.
What things should you check during a trip? - - ANS - -Watch gauges, mirrors, use
your senses to check for problems. Look, listen, and smell. Check critical items when
you stop; tires, wheels, and rims ; brakes, lights and reflectors; brake and electrical
connections to trailer. trailer coupling devices. Cargo securement devices.
Name some key steering system parts. - - ANS - -Control arm, steering shaft, pitman
arm, steering wheel, hydraulic fluid reservoir
Name some suspension system defects - - ANS - -Spring hangers that allow
movement of axle from proper position, cracked or broken spring hangers, missing or
broken leaves in any leaf spring. If one-fourth or more are missing, it will put the
vehicle out of service. Any defect could be dangerous.
What three kinds of emergency equipment must you have? - - ANS - -Fire
extinguisher, spare electrical fuses , warning devices for parked vehicles. ( three
reflective triangles, and at least 6 fuses or 3 liquid burning flares).
,What is the minimum tread depth for front tires? For other tires? - - ANS - -4/32 inch
on every major groove of front tires. 2/32 on other tires. No fabric should show
through the side wall or tread
Name some things you should check on the front of your vehicle during the walk
around inspection - - ANS - -Clean glass, Clean and secure mirrors, door latches or
locks work, condition of tire rims and tires, tight lug nuts, hub oil level is between the
add and full mark, no leaks, springs, shock absorbers, front axle, steering system
condition, condition of brakes, spare tire.
What should wheel bearing seals be checked for? - - ANS - -Hub oil level and no
leaks
How many red reflective triangles should you carry? - - ANS - -Three
How do you test hydraulic brakes for leaks? - - ANS - -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? - - ANS -
-For your saftey
Why should you back toward the driver's side? - - ANS - -So you can see better.
Backing toward the right side or "blind side" is very dangerous because you can't see
as well.
,If stopped on a hill, how can you start moving without rolling back? - - ANS - -Partly
engage the clutch before taking foot off the brake. Put on the parking brake whenever
necessary. Release the parking brake when you have applied enough engine power to
keep from rolling back.
When backing, why is it important to use a helper? - - ANS - -There are blind spots
you cannot see
What is the most important hand signal that you and the helper should agree on? - -
ANS - -Agree on a signal for stop most importantly.
Retarders keep you from skidding when the road is slippery. True or false? - - ANS - -
False
What are the two ways to know when to shift? - - ANS - -Use engine speed (rpm) or
road speed (mph)
When preparing to do a pre-trip inspection you must check to see that the parking
brakes are on and/or chocked - - ANS - -True
When getting in to start the engine and inspect inside of the cab you must? - - ANS - -
Make sure the parking brake is on, Put the gearshift in neutral (or park if automatic).
Start engine and listen for unusual noises.
Look at the gauges- the oil pressure gauge should come up to normal within how
long after starting the engine? - - ANS - -Within seconds
, You should check the following for looseness, sticking, damage or improper settings. -
- ANS - -the steering wheel, accelerator, brake and clutch pads
After inspecting mirrors and windshields for cracks, dirt, illegal stickers or other
obstructions to see, you should... - - ANS - -Clean and adjust as necessary
When checking lights you should... - - ANS - -Make sure that the parking brake is set,
turn off the engine and take the key with you, turn on the headlights and four way
flashers
What is the proper way to hold the steering wheel? - - ANS - -Firmly with both hands
on opposite sides of the wheel.
What are two special conditions where you should down shift - - ANS - -Before
starting down a hill and before entering a curve.
When should you downshift automatic transmissions - - ANS - -When going down
grades.
How far ahead should you look? - - ANS - -Most good drivers look 12 to 15 seconds
ahead
What are two main things to look for ahead? - - ANS - -Traffic coming onto the
highway, into your lane, or turning. Brake lights or turn signals
