Class A/B Knowledge Flashcards
When driving a vehicle equipped with an Anti-Lock Braking System (ABS), you should:
Brake as you would in a vehicle not equipped with ABS.
Who is responsible for ensuring cargo is loaded properly?
The driver.
When loading cargo, it is important to:
Know the weight capacity rating of the suspension system.
Cargo should be covered:
To protect people from spillage.
Laws about securing loads and regulating CMV weights may vary from state to state. During
interstate travel:
The law of the state the vehicle is in takes precedence.
When loading cargo, weight should be placed:
As low as possible
Who is responsible for inspecting a vehicle’s cargo?
The driver
Loading cargo onto a vehicle:
May be done by a person other than the driver, but the driver is responsible for the
safety of the cargo.
What is the Gross Vehicle Weight Rating (GVWR)?
The maximum permitted total weight of a vehicle and its cargo
Cargo being transported should be checked:
Before the trip and again within the first 50 miles of the trip.
If transporting 30 feet of cargo on a flatbed trailer, you should use a minimum of ____ to
restrain the cargo.
Three tie-downs
A poor balance of weight in a trailer:
Can make handling unsafe.
You should always use at least ____ to secure cargo on a flatbed trailer.
Two tie-downs
Bracing is used to:
Prevent items from moving in a trailer.
An item that is 40 feet long placed on a flatbed trailer should be secured by at least ____
tie-down(s).
Four
If transporting livestock, drivers should be concerned about:
The vehicle’s weight shifting as the animals move.
A truck may need to be under the legal maximum weight limit when being driven:
On a mountainous road.
Too little weight on a steering axle can result in:
Poor traction.
Dry bulk tanks require special care because:
They have high centers of gravity.
You should cover cargo:
To protect the cargo from weather.
When carrying a sealed load, the driver:
Should ensure the weight of the cargo does not violate weight limits.
A second conviction of operating a CMV with a minimum blood alcohol concentration (BAC) of
0.04 percent will result in:
The loss of your CDL for life.
While still below the legal limit, a driver operating a CMV with a detectable amount of alcohol in
their system will:
Result in an out-of-service order for 24 hours.
You may:
Not have more than one license.
If you are disqualified from driving:
You must notify your employer within two business days.
While operating a CMV:
You are always required to wear a safety belt.
It is illegal to operate a CMV with a minimum blood alcohol content (BAC) of:
0.04 percent.
If asked by a law enforcement officer to take a test to determine your blood alcohol
concentration (BAC):
You will lose your CDL if you refuse to take the test.
Your CDL will be revoked if:
Your privilege to operate your personal vehicle is revoked.
If
If convicted of a traffic violation, you must inform your employer:
Within 30 days.
While driving a CMV:
You may not hold a cell phone to make a call.
During the steering box portion of the vehicle inspection test, you should not:
Assume all cotter keys are present.
During a vehicle inspection, ensure that the landing gear is:
Fully raised.
When performing a pre-trip inspection and looking into the fifth wheel gap, you should:
Make sure the locking jaws are fully closed around the kingpin.
Move over laws require:
All vehicles to vacate the lane closest to an emergency vehicle that is stopped with its
lights flashing.
Emergency equipment in a vehicle is:
Required.
Mirror adjustment can only be checked properly if:
The trailer is straight.
If unable to tell if the road is becoming icy and slippery, a driver:
May open their window and feel the front of the side mirror for ice.
What happens when a vehicle hydroplanes?
The tires lose contact with the road.
A cardboard box on the roadway:
May contain a heavy object that could damage your vehicle.
A stopped bus:
Is a concern, whether passengers are visible or not.
Headlights:
Should be on the high beam setting whenever possible.
What is road rage?
Operating a motor vehicle with the intent of doing harm to others
Black ice is:
A thin layer of ice on the road.
Before entering a curve, you should:
Downshift.
When driving, it is important to:
Look to the front, sides, and rear of your vehicle.
When making a turn, when should you cancel your turn signal?
After the turn is completed
The maximum amount of play that is safe on a 20-inch steering wheel is:
Two inches.
If you identify a distracted driver on the road, you should:
Give them plenty of room.
When conducting a pre-drive inspection:
The previous inspection report should be reviewed, if applicable.
In low temperatures, bridges usually freeze:
Before other parts of the roadway.
If being tailgated, you should:
Increase the amount of space between your vehicle and the vehicle in front of you.
If a vehicle is equipped with power steering, the hoses should be checked:
For leaks.
You will often have to drive your vehicle under bridges and overpasses. If approaching such an
opening, you should:
Assume the posted clearance height is inaccurate.
A ramp’s posted speed limit:
Is suitable for some vehicles, but may be too fast for a large CMV.
Parked delivery trucks may be hazardous because:
People are often in a hurry when exiting such trucks and may not look for other vehicles.
How do ice cream trucks become hazardous to other drivers?
Children often run toward an ice cream truck without looking for other traffic.
When a vehicle is started, warning lights and buzzers:
Should turn off within a few seconds.
After two violations of any state law regarding hand-held mobile phone use:
Your CDL will be disqualified.
One way to avoid becoming an aggressive driver is to:
Set realistic expectations regarding travel time.
When passing another vehicle, you should:
Assume the other driver doesn’t see you.
A tread depth of ____ should be in every major groove of a front tire.
4/32 of an inch
One way to prevent drowsiness while driving is to:
Get adequate sleep the night before the trip.
A tread depth of ____ should be in every major groove of a tire that is not in the front of a
commercial motor vehicle.
2/32 of an inch
If driving so slowly that you could impede other drivers, you should:
Drive while using your four-way flashers.
If driving through flowing water or a large puddle, you should:
Gently apply the brakes.
If one-fourth of the leaves in a leaf spring are missing when a vehicle is inspected:
The vehicle will be put out-of-service until it is fixed.
What is the best way to stop if your brakes fail while you are driving downhill?
Steer onto an escape ramp.
A broken exhaust system:
Can allow poisonous fumes to enter the cabin.
What are placards?
Signs placed on a vehicle to identify cargo hazards
A pre-trip inspection:
Should be done in the same way every time.
Distracted driving:
Can be avoided by not engaging in complex conversations while driving.
If a driver has stopped on the road and is placing triangles to warn other motorists:
The triangles should be held between the driver and oncoming traffic.
When approaching a vehicle for a pre-trip inspection, a driver should look under the vehicle:
To see if there are any fresh fluids on the ground.
What is reaction distance?
The distance you will travel between realizing you must brake and when you physically
hit the brakes
A pre-trip inspection should include:
A check of the engine oil level.
When starting the engine of a truck with a trailer, you can tell that your vehicle’s ABS is not
working if:
The yellow light on the left rear of the trailer stays on.
When starting an engine, oil pressure should come up to a normal level:
Within seconds.
How can you check for a leak in hydraulic brakes?
Pump the brake pedal three times, then hold down the pedal for five seconds. If the pedal
moves, there may be a problem.
When passing a row of parked vehicles, a driver should:
Watch for signs of a person exiting a vehicle.
When backing with a trailer, turning toward the driver’s side is encouraged because:
The driver will have the best possible view.
In very hot weather, tires should be checked regularly because:
Air pressure may increase with the temperature.
When stopping a manual transmission vehicle, you should:
Push the clutch in when the engine is close to idle.
When driving:
You should always use turn signals to warn others about your intentions.
When backing with a trailer, you should begin by:
Turning the steering wheel in the direction opposite of the turn.
When backing up, follow a turning trailer by:
Changing the direction of the steering wheel.
The most important reason to inspect your vehicle before a trip is:
To ensure safety.
If you remain in neutral for too long while switching gears:
You may have trouble putting the vehicle into the next gear.
If you must stop on the side of a highway, how far behind your vehicle should warning devices
be placed?
10, 100, and 200 feet
Scan the road ____ ahead of your vehicle.
12 to 15 seconds
In an emergency, if you must leave the roadway to drive on the shoulder, you should:
Stop safely before returning to the road, if possible.
You should check and adjust your mirrors:
Before driving.
When inspecting a power steering-equipped vehicle, you should be sure that:
The fluid is at the proper level.
When adjusting your mirrors before a trip:
Part of your vehicle should be visible in the mirrors.
To warn drivers behind you that you will be slowing down, you should:
Tap your brake pedal a few times to illuminate your brake lights.
When it is difficult to see and you are traveling near other drivers, you should:
Use low beam lights.
When driving on a wet road, you should reduce your speed by:
About one-third.
When driving on packed snow, you should reduce your speed by:
One-half or more.
You should maintain at least ____ of following distance per every 10 feet of your vehicle
when you are traveling more slowly than 40 mph.
One second
Accelerating roughly is:
Discouraged, as it may cause damage to the vehicle.
When stopping:
The brake pedal should be pressed down gradually.
If you must drive in reverse, it is helpful to:
First exit the truck and walk the path to look for obstacles.
Dual tires should:
Not come into contact with one another.
If you are turning left at an intersection where there are two available turn lanes:
It is best to use the right lane.
Most heavy vehicles require ____ to change gears.
Double clutching
Slow down and be extra careful:
When approaching a work zone.
The two indicators that determine when you should upshift are:
Engine speed and road speed.
Leaking shock absorbers:
Indicate a potentially dangerous defect.
If you need to travel down a hill, you should switch into a lower gear:
Before you start moving downhill.
For safety purposes, when should you turn off a retarder?
When the roadways are slippery
Texting while driving is especially dangerous because:
It is both a mental and physical distraction.
When checking your vehicle’s lights before driving:
The engine should be turned off.
When testing a parking brake, the vehicle should:
Be placed in a low gear while the driver attempts to pull forward.
When parked on the side of the road, you should:
Use your four-way flashers.
If driving a vehicle with a manual transmission, you can prevent your vehicle from rolling
backward when starting from a stop by:
Partly engaging the clutch before removing your foot from the brake pedal.
In cool weather, as the temperature begins to rise and ice begins to melt:
The road will become even more slippery.
How does doubling your speed from 20 mph to 40 mph affect your vehicle’s braking distance?
It quadruples.
When backing, it is best to:
Use a helper, if possible.
A truck should be parked:
So that it can be pulled forward to leave the space.
In hot weather, spots on the pavement where tar is bleeding:
Are very slippery.
When near a railroad crossing:
You may not hear a train, even if one is approaching.
When approaching a railroad crossing, you should:
Not rely solely on warning signals to indicate if a train is approaching.
When using your mirrors, you should frequently look at your tires to:
Watch for tire fires.
What should you do if your vehicle gets stuck on railroad tracks?
Get out of the vehicle and call for assistance.
To avoid a hazard, you:
May need to swerve your vehicle out of the way.
You must put out emergency warning devices within ____ of stopping on the side of the
road.
10 minutes
Texting while driving a CMV is:
Prohibited.
If a driver begins to feel fatigued while driving, they should:
Stop and rest.
How could you reduce your stress while driving?
Listen to calming music
If an aggressive driver confronts you, you should not:
Challenge them.
If a tire fails, you should:
Stay off the brakes.
After an accident, flares should be used with caution because:
There may be fuel spilled on the ground that could catch fire.
If you have an engine fire, you should:
Turn off the engine as soon as possible.
If an approaching driver is using their high beam headlights, you should:
Look to the right side of your lane until the vehicle has passed.
When trying to put out an electrical fire, you should:
Use a B:C extinguisher.
If you’re not sure what to do to extinguish a fire in your vehicle, you should:
Wait for the firefighters.
When entering a foggy area, you should:
Slow down.
When using a fire extinguisher on a fire, you should:
Stand as far away from the fire as possible.
The only way to sober up after consuming alcohol is to:
Wait.
Over-the-counter medication:
Can affect a person’s ability to drive safely.
If you are driving at a reduced speed in a construction zone when you spot a construction
worker near the road, you should:
Further reduce your speed.
If a vehicle is carrying hazardous cargo, placards must be placed:
On the front, rear, and sides of the vehicle.
If you realize you may be running late to your destination, you should:
Deal with it and drive at a safe speed.
Joggers who are wearing headsets:
May not be aware of what is happening around them.
A person working on a disabled vehicle on the shoulder of a road:
May be focused on the repair and not paying attention to roadway traffic.
What is the purpose of a vehicle inspection report?
It tells the motor carrier about problems that may need to be fixed.
An open automobile window in cold weather may indicate that the driver is:
Driving impaired.
While driving, you should:
Develop plans to get out of any dangerous situation that could arise.
If an aggressive driver is involved in a crash on the road ahead of you, you should:
Stop after the crash scene and report the driver’s aggressive behavior to the police.
The radiator cap:
Should not be removed when the coolant is hot.
