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Driving Test
Missouri
Missouri CDL Knowledge Test Class A 2
Answers
Q.1.
When starting an engine:
The brakes will lock up.
Warning lights should turn on, then quickly turn off.
Coolant temperatures should decrease.
Q.2.
Which of the following is not a good rule when using turn signals?
Signal early. Signal well before a turn or lane change.
Signal continuously. Do not cancel a signal until the turn is completed.
Don’t over-signal. If no one is near you, there is no need to signal.
Q.3.
Air brakes use ____ to function.
Compressed air
Liquid air
Nitrogen
Q.4.
When driving a vehicle equipped with an Anti-Lock Braking System (ABS), you should:
Always pump the brakes several times before holding down the brake pedal.
Brake normally.
Press down the brake pedal as hard as possible every time you slow or stop.
Q.5.
Brake linings should be:
Loose.
Free of oil.
Soft.
Q.6.
Hydroplaning happens most often when:
A vehicle is traveling faster than 60 mph.
Tire pressure is too low.
Tire tread is too deep.
Q.7.
When loading a trailer, it is important to:
Place as little weight as possible over the axles.
Place a well-balanced amount of weight over the axles.
Place weight over only the axles.
Q.8.
When inspecting your tires, you do not want to find:
Tire tread that is 4/32 of an inch deep.
Valve stems without damage.
Mismatched tire sizes.
Q.9.
A bridge formula:
Permits less weight per axle for axles that are close together.
Permits more weight for trucks.
Is not a concern for drivers.
Q.10.
What is reaction distance?
The distance you will travel between realizing you must brake and when you physically hit the brakes
The distance you will travel between a hazard becoming visible and you seeing the hazard
The distance you will travel between seeing a hazard and realizing you must brake
Q.11.
The safety belt should:
Not be adjustable.
Latch securely.
Be frayed.
Q.12.
Once cargo is secured onto a vehicle:
You do not need to inspect the cargo.
You should not let others inspect the cargo.
You should check the cargo every 150 miles.
Q.13.
If you plan to transport hazardous materials, you must pass which endorsement test?
Tank
Hazardous materials
Passengers
Q.14.
When driving in winter, which of the following should receive extra attention in a pre-trip inspection?
Coolant and antifreeze levels
The air conditioning unit
The oil pressure
Q.15.
When operating a truck requiring a CDL:
You are never required to wear a seat belt.
You are required to wear a seat belt, but only if transporting more than 500 pounds of cargo.
You must always wear a seat belt.
You are required to wear a seat belt, but only if you are driving a tank vehicle.
Q.16.
Which of the following vehicles is not exempted in requiring the driver to hold a CDL?
A military vehicle
A school bus
An emergency vehicle
Q.17.
A poor balance of weight in a trailer:
Can make handling unsafe.
Improves traction.
Increases fuel efficiency.
Q.18.
Loading cargo improperly:
Improves fuel efficiency.
Can be dangerous.
Usually makes unloading easier.
Q.19.
When near a railroad crossing:
You should expect to hear every approaching train.
You may not hear a train, even if one is approaching.
You will hear two short blasts of a train's horn if a train is approaching.
Q.20.
If you identify a distracted driver on the road, you should:
Tailgate them.
Flash your lights at them.
Give them plenty of space.
Q.21.
When making tight maneuvers, it is important for a driver to:
Open their door for a better look.
Use their mirrors.
Flash their headlights.
Q.22.
Your horn should be used to:
Tell other drivers that you are angry.
Warn other drivers that you are near.
Frighten other drivers.
Q.23.
Aggressive driving is:
Operating a vehicle in a selfish or pushy manner.
Operating a vehicle with a strong regard for other motorists’ safety.
Operating a vehicle in the left lane.
Q.24.
If involved in an accident, which of the following is not recommended?
Trying to move your vehicle to the side of the road
Caring for the injured
Driving away from the scene
Q.25.
____ is a thin layer of ice that forms on road surfaces.
White ice
Black ice
Green ice
Q.26.
If other vehicles are having a difficult time getting around your truck on a road with two or more lanes, you should:
Speed up.
Drive on the shoulder.
Use the right lane.
Q.27.
Texting while driving is especially dangerous because:
It is both a mental and physical distraction.
A message may be upsetting to the driver.
People like to read and may become too engaged in their phones.
Q.28.
If a load is 40 feet long, the minimum number of tie-downs required to secure the load is:
Two tie-downs.
Three tie-downs.
Four tie-downs.
Q.29.
If approaching a railroad crossing that is being approached by a train, you should:
Try to cross the tracks quickly.
Drive around any lowered gates.
Stop and wait for the train to pass before beginning across the tracks.
Q.30.
If you are being tailgated while driving a large vehicle, do all of the following, except:
Reduce your speed gradually.
Increase your following distance.
Increase your speed.
Q.31.
Alcohol is removed from the body:
By exercising.
At a fixed rate.
More quickly if the person stays awake.
Q.32.
On slippery roads, you should:
Accelerate and slow down frequently.
Adjust your driving to match weather conditions.
Tailgate other vehicles.
Q.33.
Rims with welding repairs:
Are not safe to use.
Are acceptable to be used on tires in the rear of the vehicle.
Are acceptable to be used if carrying a light load.
Q.34.
Looking far ahead of your vehicle while driving is:
Discouraged, as there is little you can do about something far up the road.
Encouraged to help you identify hazards as early as possible.
Not permitted.
Q.35.
Dry bulk tanks:
Cannot be driven on interstates.
Take special care to be driven.
Are usually not allowed to cross railroad tracks.
Q.36.
As part of the vehicle inspection test, a CDL applicant may be asked to:
Check the engine oil level.
Replace a tire.
Remove the alternator belt.
Q.37.
Talking on a hands-free phone while driving:
Does not distract the driver.
Only distracts the driver if the driver is speaking.
Can be distracting to the driver.
Q.38.
What does the air compressor governor do?
It stops the compressor from pumping air.
It turns on the air compressor.
It stores the compressed air.
Q.39.
In a leaf spring:
Leaves should be broken.
Leaves can be missing.
Leaves should not be broken.
Q.40.
Blocking a load:
Is dangerous and should never be done.
Helps to stabilize the load.
Is only done with liquid cargo.
Q.41.
If you will be transporting hazardous materials that require placards, you must:
Ask permission of the local law enforcement agency.
Obtain a hazardous materials endorsement.
Transport at night only.
Q.42.
Blocking cargo:
Should never be done.
Should be done to prevent shifting of cargo.
Should only be done with welded material.
Q.43.
When transporting a load, you should inspect the cargo:
Only before starting to drive.
At the end of each day.
Every time you take a break.
Q.44.
If a worker is present in a work zone, you should:
Continue driving at the posted speed limit.
Slow to a speed under the posted speed limit.
Drive in the grass.
Q.45.
Cargo with a high center of gravity:
Can make a vehicle likely to tip over.
Is encouraged in inclement weather.
Is required on some roads.
Q.46.
Before driving a vehicle with air brakes, you should ensure that the ____ come on automatically when air pressure falls below 45 psi.
Spring brakes
Parking brakes
Air brakes
Q.47.
Dual tires should:
Not both be in contact with the road surface.
Not touch one another.
Be different sizes from one another.
Q.48.
A broken exhaust system:
Can allow poisonous fumes to enter the cabin.
Does not cause problems.
Should not be a concern.
Q.49.
By beginning a left turn before reaching the center of an intersection, you:
Will likely complete the turn satisfactorily.
May hit other vehicles with the left side of your vehicle.
Can expect other drivers to move their vehicles to accommodate your turn.
Q.50.
Shortly after a tire has been changed, you should:
Stop to make sure the lug nuts are still tight.
Repair the brakes.
Deflate the tire to 10 psi.
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