Missouri CDL Exam with all Correct & 100% Verified
Answers |Actual Complete Update |Already Graded A+
What is the most important reason for doing a vehicle inspection? ✔Correct Answer-Safety is the
most important reason you inspect your vehicle, safety for yourself and other road users.
What things should you check during a trip? ✔Correct Answer-Instruments, Air pressure gauges (if
have air brakes), Temperature gauges, Pressure gauges, Ammeter & Voltmeter, Mirrors, Tires, Cargo
& Cargo Covers.
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, Power steering
cylinder, Steering arm
Name some suspension system defects. ✔Correct Answer-~Cracked or broken Spring hangers.
~ Spring hangers that allow movement of the axle from its proper position.
~ missing or broken leaves in any leaf spring.~ leaking shock absorbers.
~ Air suspension system that are damaged or leaking.
What three kinds of emergency equipment must you have? ✔Correct Answer-1) Spare electrical
fuses
2) Fire extinguisher
3) Warning devices (3 triangle reflectors)
What is the minimum tread depth for front tires? ✔Correct Answer-4/32" for front tires
What is the minimum tread depth for your other tires? ✔Correct Answer-2/32" for other tires
Name some things you should check on the front of your vehicle during a walk around inspection.
✔Correct Answer-Condition of front axel, condition of steering system, condition of lights &
reflectors, condition of windshield
What should wheel bearings seals be checked for? ✔Correct Answer-Leaks
How many reflective triangles should you carry? ✔Correct Answer-3
How do you test hydraulic brakes for leaks? ✔Correct Answer-Pump brakes 3x, apply firmly to
brake pedal for 5 seconds. Pedal should not move, if so something is wrong.
Why put the starter switch key in your pocket during the pre-trip inspection? ✔Correct Answer-So
that no one can move the vehicle while you are inspecting it. To prevent thief, prevent locking
oneself out.
Why should you back towards the driver's side? ✔Correct Answer-You maximize the ability to see
your vehicle and the area around it.
If stopped on a hill, how can you start moving without rolling back? ✔Correct Answer-Partly
engage the clutch before you take your right foot off the brake, use parking brake. Park with the
ability to pull forward when you leave if you can.
, When backing why is important to use a helper? ✔Correct Answer-They can direct you & see the
blind spots you cannot.
What is the most important hand sign you and your helper must agree on? ✔Correct Answer-Stop
What are 2 special conditions where you should downshift? ✔Correct Answer-1) before starting
downhill
2) before entering a curve
When should you downshift a automatic transmission? ✔Correct Answer-Before starting
downgrades (downhill)
Retarders keep you from skidding when road is slippery. True or False? ✔Correct Answer-False,
retarders will make you slip even more on slick roads
What are 2 ways to know when to shift? ✔Correct Answer-1) engine speed (rpm)
2) road speed (mph)
How far does the manual say you should look? ✔Correct Answer-12-15 seconds ahead, or 1/4 mile
at 55mph
What are 2 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-
Checking your mirrors
What does "communicating" mean in safe driving? ✔Correct Answer-Signal your intentions
(horn/turn signal/flasher)
Where should your reflectors be placed when stopped on a divided highway? ✔Correct Answer-
Reflectors should be placed 10ft, 100ft & 200ft towards approaching traffic.
What 3 things add up to total stopping distance? ✔Correct Answer-perception distance + reaction
distance +brake distance = total stopping distance.
If you go 2x as fast, will your stopping distance increase by 2 or 4 times? ✔Correct Answer-Will
increase by 4
Empty trucks have the best braking. True or False ✔Correct Answer-False, because empty trucks
have less traction
What is hydroplaning? ✔Correct Answer-When tires lose contact with the road & have little or no
traction.
What is black ice? ✔Correct Answer-A thin layer of ice 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 shadow on the road, a pavement marking or some other clear
Answers |Actual Complete Update |Already Graded A+
What is the most important reason for doing a vehicle inspection? ✔Correct Answer-Safety is the
most important reason you inspect your vehicle, safety for yourself and other road users.
What things should you check during a trip? ✔Correct Answer-Instruments, Air pressure gauges (if
have air brakes), Temperature gauges, Pressure gauges, Ammeter & Voltmeter, Mirrors, Tires, Cargo
& Cargo Covers.
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, Power steering
cylinder, Steering arm
Name some suspension system defects. ✔Correct Answer-~Cracked or broken Spring hangers.
~ Spring hangers that allow movement of the axle from its proper position.
~ missing or broken leaves in any leaf spring.~ leaking shock absorbers.
~ Air suspension system that are damaged or leaking.
What three kinds of emergency equipment must you have? ✔Correct Answer-1) Spare electrical
fuses
2) Fire extinguisher
3) Warning devices (3 triangle reflectors)
What is the minimum tread depth for front tires? ✔Correct Answer-4/32" for front tires
What is the minimum tread depth for your other tires? ✔Correct Answer-2/32" for other tires
Name some things you should check on the front of your vehicle during a walk around inspection.
✔Correct Answer-Condition of front axel, condition of steering system, condition of lights &
reflectors, condition of windshield
What should wheel bearings seals be checked for? ✔Correct Answer-Leaks
How many reflective triangles should you carry? ✔Correct Answer-3
How do you test hydraulic brakes for leaks? ✔Correct Answer-Pump brakes 3x, apply firmly to
brake pedal for 5 seconds. Pedal should not move, if so something is wrong.
Why put the starter switch key in your pocket during the pre-trip inspection? ✔Correct Answer-So
that no one can move the vehicle while you are inspecting it. To prevent thief, prevent locking
oneself out.
Why should you back towards the driver's side? ✔Correct Answer-You maximize the ability to see
your vehicle and the area around it.
If stopped on a hill, how can you start moving without rolling back? ✔Correct Answer-Partly
engage the clutch before you take your right foot off the brake, use parking brake. Park with the
ability to pull forward when you leave if you can.
, When backing why is important to use a helper? ✔Correct Answer-They can direct you & see the
blind spots you cannot.
What is the most important hand sign you and your helper must agree on? ✔Correct Answer-Stop
What are 2 special conditions where you should downshift? ✔Correct Answer-1) before starting
downhill
2) before entering a curve
When should you downshift a automatic transmission? ✔Correct Answer-Before starting
downgrades (downhill)
Retarders keep you from skidding when road is slippery. True or False? ✔Correct Answer-False,
retarders will make you slip even more on slick roads
What are 2 ways to know when to shift? ✔Correct Answer-1) engine speed (rpm)
2) road speed (mph)
How far does the manual say you should look? ✔Correct Answer-12-15 seconds ahead, or 1/4 mile
at 55mph
What are 2 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-
Checking your mirrors
What does "communicating" mean in safe driving? ✔Correct Answer-Signal your intentions
(horn/turn signal/flasher)
Where should your reflectors be placed when stopped on a divided highway? ✔Correct Answer-
Reflectors should be placed 10ft, 100ft & 200ft towards approaching traffic.
What 3 things add up to total stopping distance? ✔Correct Answer-perception distance + reaction
distance +brake distance = total stopping distance.
If you go 2x as fast, will your stopping distance increase by 2 or 4 times? ✔Correct Answer-Will
increase by 4
Empty trucks have the best braking. True or False ✔Correct Answer-False, because empty trucks
have less traction
What is hydroplaning? ✔Correct Answer-When tires lose contact with the road & have little or no
traction.
What is black ice? ✔Correct Answer-A thin layer of ice 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 shadow on the road, a pavement marking or some other clear
