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General Knowledge - Full Test Sample #3, 50 questions

What is the minimum tread depth for front tires?

1/32 inch.

2/32 inch.

4/32 inch.

When using your fire extinguisher you should get as close to the fire as possible.

True.

False.

Name some things you should check on the FRONT of your vehicle during your pre-trip inspection:

Low beams, high beams, four way flashers, and turn signals.

Windshield wipers, mirrors, and hood latches.

Oil, transmission, air compressor, and radiator.

Why are placards used?

So hazardous materials are not mixed with food.

Lt is the law.

To communicate the risk.

Name some suspension system defects:

Broken leaves in leaf spring and cracked or broken spring hanger.

Leaking shock absorbers.

Both of these answers are correct.

What is the minimum tread depth for tires other than front tires?

2/32 inch.

3/32 inch.

4/32 inch.

How can you avoid the effects that wet brakes can cause?

Slow down and place the transmission in low gear.

Gently put on the brakes and increase engine rpm, cross the water while keeping light pressure on the brakes.

When out of water maintain light pressure on the brakes for a short distance.

All of these answers are correct.

What things should you check during a trip?

Check load stability by slightly swerving left to right in your lane.

Map, directions, and weather report.

Watch gauges, mirrors, and use your senses to check for problems ... LOOK, LISTEN, AND SMELL.

Why should you be in the proper gear before starting down a hill?

Because you need to be in the same gear at the bottom of the hill.

You will not be able to shift into a lower gear once you are going down a hill.

Because the clutch is made to be used on even surfaces.

What is an advantage of going right instead of left around an obstacle?

There is no advantage.

It is much easier to turn a truck to the right.

If you are blocked on both sides, a move to the right won't force anybody into an opposing traffic lane and a possible head-on collision.

Name two situations where legal maximum weights may not be safe to haul:

During bad weather or in mountains.

Through tunnels and over bridges.

At night or during heavy traffic.

What three things related to cargo are the driver's responsibility?

Inspecting the cargo, recognizing overloads, and properly securing the cargo.

Inspecting the cargo, hauling the cargo, and securing the cargo.

Weighing the cargo, securing the cargo, and delivering the cargo.

What is a hazardous materials placard?

Signs put on the outside of a vehicle which identify the hazard class of the cargo.

Signs put on the back of a vehicle which identify the hazard class of the cargo.

Signs put on the outside of a vehicle which identify the hazard class and weight of the vehicle.

What must you check before transporting a sealed load?

That the seal is authentic.

That the load is properly secured.

That the placard numbers match the seal numbers.

How do you calculate how many seconds of following distance space you have?

Wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the same spot.

Wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the same spot, then multiply your figure by 2.

Divide your speed by four and add one second for every ten feet of trailer you are hauling.

What is a "pull-up"?

When pulling off the shoulder you pull up until the trailer is straight.

A maneuver performed by a tow truck to pick up an overturned truck.

Pulling forward while backing a trailer to reposition it.

What should wheel bearing seals be checked for?

Leaks.

Gasoline.

Color changes.

Select the proper collision procedures that are required for any collision that you are involved in; in which you are not seriously injured.

Protect the area.

Notify the authorities.

Care for the injured.

Collect required information.

Report the collision.

All of these are required.

The tendency for long commercial vehicles to swing wide on turns is called:

Off-tracking.

Hydroplaning.

Fishtailing.

What should you do if you get stuck on the railroad tracks?

Scream for help.

Get out of your vehicle and away from the tracks.

Stay in your vehicle.

Which of these is a good thing to remember about drinking alcohol?

Alcohol first affects judgment and self-control.

Small quantities of alcohol can improve reaction time.

The driver can control how quickly the body rids itself of alcohol.

Which of these statements is true about medicines used to treat the common cold?

It can be used while driving as long as you only take half the regular dose.

It should only be used when driving during the daytime.

It often makes you sleepy, thus should not be used while driving.

The total weight of the powered unit, the trailer, and the cargo is called:

Gross vehicle weight.

Gross combination weight.

Gross axle weight.

Which piece of emergency equipment should be in your vehicle?

Circuit breakers.

First Aid Kit.

Warning devices for parked vehicles.

Which of these statements is true about causes of vehicle fires?

Under-inflated tires will NOT cause a vehicle fire.

Carrying a properly charged fire extinguisher will help prevent fires.

Poor trailer ventilation can cause flammable cargo to catch on fire.

Which of these statements is true about vehicle fires?

If the cargo or box trailer catches on fire, open the doors as soon as you can.

If your engine is on fire, open the hood as soon as you can.

A burning tire should be cooled with water.

Which of these statements is true about brakes.

Brakes absorb more heat to stop heavier vehicles.

Brake drums cool very quickly when the vehicle is moving very fast.

Brake fade is not caused by heat.

Which of the following does not provide extra gears on some trucks?

Automatic transmissions.

Auxiliary transmissions.

Multi-speed rear axles.

Which of these is not a danger when an automatic transmission is forced into a lower gear at a high speed?

Damage to the transmission.

Loss of engine braking effect.

Loss of steering control.

Which of these statements is true about backing heavy vehicles?

You should avoid backing whenever you can.

Helpers should be out of sight and use only spoken signals to communicate with the driver.

It's safer to back toward the right side of the vehicle.

The distance you should look ahead is __ while driving at highway speeds.

1/8 mile

1/4 mile

1/2 mile

The Commercial Driver's Handbook suggests several things to do when you pass a vehicle. Which of these is NOT one of them?

Lightly tap your horn if needed.

At night, turn on your high beams while you pass the vehicle.

Assume the other driver does not see you.

Which of these statements is true about speed management?

Shady parts of the road allow better traction than open areas.

Road surfaces will freeze before bridges.

On slippery roads, it takes longer to stop and is harder to turn without skidding.

You are driving a heavy vehicle and must exit a highway using an off-ramp that curves downhill. You should:

Slow down to a safe speed before taking the curve.

Slow down to the posted speed limit for the off ramp.

Wait until you are in the curve before downshifting.

Which of these is a good thing to do when driving at night?

Drive slowly enough to stop within the range of your headlights.

Look directly at oncoming headlights only briefly.

Keep your instrument lights bright.

Which of these is NOT something you should do if your headlights are not working properly?

Clean the headlights.

Leave your high beams on.

Adjust the headlights.

When roads are slippery you should:

Decrease the distance that you look ahead of your vehicle.

Stop and test the traction while going up hills.

Take turns as carefully as possible.

You should avoid driving through deep puddles or flowing water but if you cannot, which of these steps can help keep your brakes working?

Gently putting on the brakes while driving through the water.

Turning on your brake heaters.

Pressing both the brake pedal and the accelerator firmly after coming out of the water.

Which of these is true about the radiator shutters and the winterfront?

The winterfront should be closed tightly.

You should remove ice from the radiator shutters.

The engine may overheat if the winterfront is left open.

Which of these statements is NOT true about engine belts in hot weather?

Cracking is likely to occur but it is not a safety threat.

You can check the tightness of belts by pressing on them.

Loose belts will not turn the water pump and/or fan on properly.

What should you do if you see a hazard in the roadway?

Swerve around it and get back into your lane.

Stop quickly and pull to the side of the road.

Use your 4-way flashers or brake lights to warn others.

A car suddenly "cuts" in front of you creating a hazard. What should you NOT do?

Honk and stay close behind the car.

Slow down to prevent a crash.

Signal and change lanes to avoid the car if possible.

Your vehicle has hydraulic brakes. When traveling on a level road, you press the brake pedal and find that it goes to the floor. Which of these statements is true?

The parking brake will not work because it is part of the same hydraulic system.

Pumping the brake will generate enough pressure to stop the vehicle.

Shifting into neutral will help slow the vehicle.

Bridge formulas permit:

Less maximum axle weight for axles that are close together.

Less maximum axle weight for axles that are far apart.

The same maximum axle weight for any axle spacing.

You are checking your steering and exhaust systems in your pre-trip inspection. Which of these problems should be fixed before the vehicle is driven?

Oil on the tie rod.

Grey smoke from the exhaust pipe.

Steering play- more than 10 degrees (2 inches on a 20 inch wheel).

Which of these items is NOT checked on a pre-trip inspection?

Whether all vehicle lights are working and clean.

Cargo securement.

Amount of fuel in the vehicle.

One can recognize hazardous materials by looking at the container's:

Label.

Shape.

Color.

If you must stop on a hill on a two-way, two-lane road. How far back should you place your reflective triangles?

Within 250 feet behind the vehicle.

Within 500 feet behind the vehicle.

As far back as necessary, so that others can see your vehicle.

Which of these is true about hours of service?

You must take a break after every two hours of driving.

After 1,000 hours of service you will be exempt from certain regulations.

You should balance your hours of service with enough sleep to keep you alert.

You should try to park your vehicle so:

You can pull forward when you leave.

There is at least one curb next to your vehicle.

Your vehicle is protected by trees or some overhang.

Which of these is NOT a proper use of vehicle lights?

Turning on your headlights during the days when visibility is reduced.

Flashing your brake lights to warn someone behind you that you are slowing down.

Flashing your brake lights to stop someone from tailgating.

Which of the following is NOT a type of retarder?

Electric.

Hydraulic.

Robotic.

What Is the first thing you should try to do if your brakes fail while driving downhill?

Call or radio for help.

Try to use your parking brake to stop.

Get off the road as soon as possible.

When you drive in the mountains, you will have to use lower gears to drive safely down grades. Which of these does NOT affect your choice of gears?

Weight of the load.

Tire tread type.

Length of the grade.

Which of these is NOT caused by rough acceleration?

Tire damage.

Mechanical damage.

Damage to the coupling.

Which of the following statements is true?

Most people are more alert at night than during the day.

Most hazards are more easily seen at night than during the day.

Many heavy vehicle accidents occur between midnight and 6 am.

Which of the following may be a sign of tire failure?

Loud hissing noise.

Gentle thumping.

Wheels fishtailing.

Which of these statements is NOT true?

Alcohol goes directly from the stomach to the blood stream.

A drinker can control how fast his or her body absorbs and gets rid of alcohol.

BAC is determined by how fast you drink, how much you drink, and how much you weigh.

Optional safety equipment may include emergency phone numbers, tire chains, and:

Tire changing equipment.

Red reflective triangles.

Charged fire extinguisher.

The braking effect of the engine is greatest when the engine is ____ the governed RPM's and the transmission is in the ____ gears.

Above, lower.

Below, higher.

Near, lower.

The best drivers are those who watch and prepare for hazards. This is called being:

Defensive.

Offensive.

Objective.

What will help keep an engine cool in hot weather?

Driving faster to force more air into the radiator.

Running the air conditioner.

Making sure the engine has the right amount of oil.

Which of these statements is true regarding the use of drugs while driving?

Prescription drugs are allowed as long as the doctor says the drugs will not affect safe driving ability.

No prescription or non-prescription drugs are allowed at any time for any reason.

Use of amphetamines, like "speed" is allowed as long as you are using the drugs to stay wake.

Which of these statements is true about warning other drivers of a stopped vehicle?

Move the red reflective triangle back if the driver's vision is obscured to within 500 feet.

Keep the vehicle’s taillights on to warn other drivers.

Put out your emergency warning devices within five minutes.

If you have a heavy load that is slowing you down on an upgrade you should:

Exit the roadway until traffic is lighter.

Drive on the shoulder so that others can pass easily.

Shift into a lower gear.

Which of these statements is NOT true about backing a heavy vehicle?

You should use a helper and communicate with hand signals.

You should back slowly until you slightly bump into the dock.

You should back and turn toward the driver's side whenever possible.

In your mirror you see a car approaching from the rear. The next time you check your mirror you don't see the car. To change lanes you should:

Wait until you are sure the car isn't in your blind spot.

Ease into the other lane slowly so the other car can get out of the way.

Assume the car left the roadway and change lanes as normal.

What should you do if a car coming towards you at night keeps its high beams on?

Flash your high beams at the other driver.

Slow down and look straight ahead in your lane.

Look to the right edge of your lane or the right edge of the road.

Which of these is especially true about your tires in hot weather?

You should check tire mounting and air pressure before driving.

If a tire that is too hot to the touch; you should hose it down with water.

A small amount of air should be let out to keep air pressure steady.

When driving through roadway work zones, you should:

Reduce speed only if workers are close to the roadway.

Turn on your parking lights.

Watch for sharp pavement drop-offs.

Which of these statements is true about bad weather driving conditions?

When the temperature drops, bridges will freeze before roadways.

The road becomes more slippery as rain continues than when the rain began.

Driving conditions become more dangerous as the temperature rises.

Which of these statements is true about other drivers?

Mail or delivery truck drivers do not pose a hazard.

Drivers using turn signals can be trusted to turn in the direction they indicate.

Short-term or daily rental truck drivers are often not used to the limited vision and pose a hazard.

Which of these will happen if a tire blows out at highway speeds?

A rapid drop in speed to below 20 mph.

A loud hissing sound.

A vibrating feeling.

To prevent "brake fade" you should:

Select a gear that will keep your vehicle to a safe speed on steep downgrades.

Apply constant hard pressure on the brakes.

Coast down hills that are not very steep inclines.

If you have been drinking alcohol, before you drive you should:

Take a cold shower.

Wait for it to wear off.

Drink coffee.

Which of the following best describes how sleep debt can be paid off?

Overcome it with willpower and non-sleep aids.

It will go away by itself over a period of time.

It can only be paid off by sleeping.

Which of these statements is true about drugs?

The use of alcohol or drugs can lead to collision and/or arrest.

A driver can use any prescription drug while driving.

Certain prescription drugs are allowed to reduce fatigue.

"Implied consent" means when you sign the driver's license application form, you:

Understand that you may drink alcohol now before driving.

Give your consent to be tested for alcohol in your blood.

Give your consent for your vehicle to be inspected for alcohol.

You should use your mirrors to check:

Your blind spots only.

If your running lights are working properly.

Where the rear of your vehicle is while you make turns.

Convex curved mirrors:

Make objects appear larger than they really are.

Make objects appear closer than they really are.

Show a wider area than flat mirrors.

The purpose of retarders is to:

Help slow the vehicle while driving and reduce brake wear.

Apply extra braking power to the non-drive axles.

Help prevent skids and reduce brake wear.

It is important to shift gears correctly to keep:

Control of the vehicle.

The engine warm.

The engine oil flowing.

A helper should be used to help back your vehicle:

When you have a trailer.

Whenever possible.

When you need to back on a curved path.

You should signal continuously while turning because:

You need both hands on the wheel to turn safely.

It is illegal to turn off your signal before completing a turn.

Most vehicles have self-canceling signals.

When approaching a traffic light that has been green for a long time, you should:

Accelerate so you get through the light.

Start to slow down so you will be ready to stop.

Continue at your current speed.

What three things add up to total stopping distance for your truck or bus?

Attention distance, reaction distance, slowing distance.

Observation distance, reaction distance, braking distance.

Perception distance, reaction distance, braking distance.

If you cannot see well with your headlights when driving in an area with few streetlights on a clear night, you should:

Turn your interior lights on.

Find another route that is better lit.

Use your high beams when legal and keep your interior light off.

When driving at night, use your low beams, when an oncoming vehicle is within:

300 feet.

400 feet.

500 feet.

If your brakes get wet while driving on a rainy day, what can happen when you apply the brakes?

Hydroplaning.

Excessive brake wear.

Trailer jackknife.

Which of these is a danger of crossing railroad tracks on dirt roads?

The ground underneath the tracks may not be stable.

You could get hung up halfway across the tracks.

Your tires could sink into the dirt and not cross the tracks.

A key principle to remember about loading cargo is to keep the load:

To the front.

To the rear.

Balanced in the cargo area.

Containerized loads:

Should come with their own tie-down devices.

Are generally used for freight carried part way by rail or ship.

Do not need to be inspected or secured by the driver.

Can federal inspectors inspect your truck or bus?

Yes, but they cannot place it out of service.

Yes, and they can place it out of service.

No.

Which of these is NOT required knowledge for drivers needing HAZMAT endorsement?

When to use placards.

Which products can be loaded together.

Basic chemistry.

When driving on grades, which of these is the best choice for a safe speed?

If you have a light load, you can go faster than those with a heavy load.

Based on your vehicle and its cargo, select a speed that is safe within the posted limit.

Follow the vehicle in front of you.

Trucks and buses are subject to certain laws, restrictions, and regulations. Which of these statements is true?

County and city laws do not apply to trucks and buses engaged in interstate commerce.

Federal regulations apply only to trucks and buses driven at least 50 miles on a trip.

Laws and restrictions can vary from place to place.

When a doctor prescribes medication for you and you know you will be driving, you should:

Take the medication, but stop taking it if you notice it is affecting your driving.

Take the medication, as well as other medication to keep you alert.

Ask the doctor if the medication will affect your ability to drive.

You should schedule your driving:

Between the hours of 4 am and 6 pm.

Between the hours of 10 am and midnight.

For the hours you are normally awake.

Stab braking should not be used on vehicles with:

Air brakes.

Spring brakes.

Anti-lock brakes.

If you do not have a CB radio, what is the first thing you should do at an accident scene?

Clear the area.

Protect the accident scene.

Flag down help.

When driving in cold weather conditions, your tire tread should:

Have at least 4/32 inch tread on it.

Have at least 2/32 inch tread on it.

Provide enough traction to steer and push the vehicle through snow.

While you are passing another vehicle, pedestrian, or bicyclist you should assume that they:

See you

Will move out of your lane of traffic.

May move into your traffic lane.

Which of the following cannot be checked at the same time:

Headlights, brake lights, and clearance lights.

Brake lights, flashers, and turn signals.

Brake lights, turn signals, and clearance lights.

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