CDL

You are driving on a straight, level highway at 50 mph. There are no vehicles in front of you. Suddenly a tire blows out on your vehicle. What should you do first? A. Stay off the break until vehicle slows down on its own B. Quickly steer on to the shoulder C. Begin light braking D. Begin controlled or stab braking

A. Stay off the break until vehicle slows down on its own EXPLANATION: It's natural to want to brake in an emergency, however, braking when a tire has failed could cause loss of control. Once the vehicle has slowed down brake very gently, pull off the road, and stop.

Which of these statements about brakes is true? A. The heavier a vehicle or the faster it is moving; he more heat the breaks must absorb B. Brakes have more stopping power when they get very hot C. Brakes drums cool very quickly when the vehicle is moving very fast

A. The heavier a vehicle or the faster it is moving; he more heat the breaks must absorb EXPLANATION: Applying the brakes causes friction to slow the vehicle, the faster it is moving, or the heavier it is the more heat that must be absorbed to stop the vehicle.

What will help someone who is drunk sober up? A. Time B. Fresh air C. A glass of water D. Coffee

A. Time EXPLANATION: The liver can only process one-third an ounce of alcohol per hour, which is considerably less than the alcohol in a standard drink. This is a fixed rate, so only time, not black coffee or a cold shower, will sober you up

Covering the brake means? A. To have your foot over the brake and ready to push it if necessary B. Pushing the brake lightly and rapidly C. Pushing on the brake just enough to make the break light to come on

A. To have your foot over the brake and ready to push it if necessary EXPLANATION: Covering the brake involves taking your right foot off the accelerator and holding it over the brake pedal. Your foot should hover over the pedal and not rest on it in any way.

What is a common cause of tire fires? A. Underinflated tires B. Cold tires C. Overinflated tires D. All of the above

A. Underinflated tires EXPLANATION: Under-inflated tires and duals that touch are the most common causes of tire fires

Which of these statements about certain types of cargo is true? A. Unstable loads such as hanging meat or livestock require extra caution on curves B. Oversize loads can be hauled without special permits during times when the roads are not busy C. Loads that consists of liquids in bulk do not present vehicle handling problems because they are usually very heavy

A. Unstable loads such as hanging meat or livestock require extra caution on curves EXPLANATION: Hanging meat can be a very unstable load with a high center of gravity, particular caution is needed on sharp curves such as off ramps and on ramps. Livestock can move around in a trailer, causing unsafe handling, and special care is necessary because livestock can lean on curves.

High beams should be: A. Used whenever it is safe and legal to do so B. Turned on when an oncoming driver does not or her light C. Dimmed when you are within 100 feet of another vehicle

A. Used whenever it is safe and legal to do so EXPLANATION: Use high beams when it is safe and legal to do so. Use them when you are not within 500 feet of an approaching vehicle.

You don't want to be a distracted driver, so you A. Have all your emotionally difficult conversations in the first jour of driving B. Eat, drink, and smoke only on straight portions of the road C. Avoid using your cell phone until you reach destination D. Read maps or use your phone only when there are no other vehicles around you

C. Avoid using your cell phone until you reach destinatio EXPLANATION: Activities inside of the vehicle that can distract your attention include talking to passengers; adjusting the radio, CD player or climate controls; eating, drinking or smoking; reading maps or other literature; picking up something that fell; reading or sending text messages. To name a few.

If a vehicle continues to drive in your blind spot, you should? A. Speed up B. Signal them to pass you C. Back off

C. Back off EXPLANATION: Backing off just means you slow down, if the vehicle was in a blind spot this change in speed should force it out of the blind spot.

Dry bulk tanks require special care because: A. They have a high center of gravity B. The load can shift C. Both above D. No answers are correct

C. Both above EXPLANATION: Dry bulk tanks require special care because they have a high center of gravity, and the load can shift. Be extremely cautious (slow and careful) going around curves and making sharp turns.

A major cause of fatal crashes is A. Overinflated tires B. Poorly adjusted braked C. Driving too fast road conditions

C. Driving too fast road conditions EXPLANATION: Driving too fast is a major cause of fatal crashes. You must adjust your speed depending on driving conditions. These include traction, curves, visibility, traffic and hills

7. Which is NOT one of the four basic skills that operating a commercial motor vehicle requires? A. Accelerating B. Steering C. First-aid certification D. Backing safely

C. First-aid certification EXPLANATION: To drive a vehicle safely, you must be able to control its speed and direction. Safe operation of a commercial vehicle requires skill in: accelerating, steering, stopping, and backing safely.

What is the I.P.D.E. method of driving? A. Identify, project, dedicate, execute B. Idea, predicts, decide, execute C. Identify, predict, decide, execute

C. Identify, predict, decide, execute EXPLANATION: Identify, Predict, Decide, and Execute (IPDE) is the step-by-step process behind the principles of defensive driving and complexities of visual perception in traffic.

When driving a commercial vehicle with a height over 13 feet you should: A. Not worry about the clearance if you stay on the state or federal highways B. Assume all clearances are high enough C. If you aren't sure about the clearance, stop and make sure D. All answers are correct

C. If you aren't sure about the clearance, stop and make sure EXPLANATION: Hitting overhead objects is a danger. Make sure you always have overhead clearance.

Stab braking A. Should never be used B. Should only be used on slick roads C. Involves locking the wheels D. Involves steady pressure on the brake pedal

C. Involves locking the wheels EXPLANATION: With the stab braking method, you apply your brakes all the way and release brakes when wheels lock up.

You are traveling down a long, steep hill. Your brakes get so hot that they fail. What should you do? A. Downshift B. Pump the brake pedal C. Look for an escape ramp or escape route.

C. Look for an escape ramp or escape route. EXPLANATION: Know escape ramp locations on your route. Signs show drivers where ramp are located. Escape ramps save lives, equipment, and cargo.

For an average commercial vehicle, being driven at 55 mph on dry pavement it will take about _____ to bring the vehicle to a stop. A. The length of a vehicle B. Twice the length of the vehicle C. More than the length of a football field D. The length if a football field

C. More than the length of a football field EXPLANATION: At 55 mph, your vehicle will travel a minimum of 419 feet.

A driver's grid log, if required: A. May be brought up to date once a week B. Is also called a tachograph C. Must be shown immediately when an officer request it D. All answers are correct

C. Must be shown immediately when an officer request it EXPLANATION: Enforcement of the HOS (Hours of Service) rules is generally handled by DOT officers of their respective states, although any ordinary police officer may inspect a driver's logbook.

If the engine is not overheated, is it completely safe to remove the radiator cap? A. Yes, as long as the radiator isn't damaged B. Yes, as long as there is no overflow C. No D. Yes

C. No EXPLANATION: Never remove the radiator cap or any part of the pressurized system until the system has cooled. Steam and boiling water can spray under pressure and cause severe burns.

The formula for stopping distance with air brakes is? A. Reaction distance and effective braking distance B. Perception distance and effective braking distance C. Perception distance, reaction distance, brake lag distance, and effective braking distance

C. Perception distance, reaction distance, brake lag distance, and effective braking distance EXPLANATION: Perception Distance + Reaction Distance + Brake Lag Distance + Braking Distance = Total Stopping Distance.

Front end header boards: A. Protect you from your cargo in case of collision B. Block the forward movement of your cargo C. Protect you from your cargo in case of collision and block the forward movement of your cargo D. No answer are correct

C. Protect you from your cargo in case of collision and block the forward movement of your cargo EXPLANATION: Front-end header boards ("headache racks") protect you from your cargo in case of a crash or emergency stop. The front-end structure should block the forward movement of any cargo you carry.

You have left the road in an emergency condition, it is impossible for you to come to a stop prior to returning to the road, which of the following is the best action to take? A. Make sure the road is clear, and continue to return to the road B. Stop and turn your vehicle around before entering the road C. Reduce your speed to 20 mph or less before returning to the road

C. Reduce your speed to 20 mph or less before returning to the road EXPLANATION: If possible, avoid using the brakes until your speed has dropped to about 20 mph, and gently return to the road.

What should you do when your vehicle hydroplanes? A. Start stab braking B. Accelerate slightly C. Release the accelerator

C. Release the accelerator EXPLANATION: You can regain control by releasing the accelerator and pushing in the clutch. This will slow your vehicle and let the wheels turn freely. If the vehicle is hydroplaning, do not use the brakes to slow down.

How does "bleeding tar" affect the road surface and driving conditions? A. It does not affect the road surface or driving conditions B. It is very sticky and slows down your vehicle C. Tar rises to the road surface in very hot weather, causing the roads to become very slippery

C. Tar rises to the road surface in very hot weather, causing the roads to become very slippery EXPLANATION: Tar in the road pavement frequently rises to the surface in very hot weather. Spots where tar "bleeds" to the surface are very slippery.

Before transporting a sealed load, you must check A. A small sample of whatever is inside B. A picture of whatever is inside C. That you don't exceed gross weight or axel weight limits D. All of the above

C. That you don't exceed gross weight or axel weight limits EXPLANATION: You cannot inspect sealed loads, but you should check that you don't exceed gross weight and axle weight limits.

Which of these statements about using mirrors is true? A. You should look at a mirror for several seconds at a time B. Convex mirrors make things look closer than they really are C. There are blind spots that your mirror cannot show you D. You should check your mirrors twice for a lane change

C. There are blind spots that your mirror cannot show you EXPLANATION: Convex mirrors present a view of people and objects that does not accurately reflect their size and distance from the vehicle.

Which of these statements about drugs is true? A. A driver can use any prescription drug while driving B. Amphetamines can be used to help the driver stay alert C. Use of drugs can lead to accidents and / or arrest

C. Use of drugs can lead to accidents and / or arrest EXPLANATION: Use of drugs can lead to traffic accidents resulting in death, injury, and property damage. Furthermore, it can lead to arrest, fines, and jail sentences. It can also mean the end of a person's driving career.

Which of these statements about driving in areas with strong winds is true? A. You should drive alongside other vehicles to help break up wind B. The lighter your vehicle, the less trouble you will have with the wind C. Winds are especially a problem when coming out of tunnels

C. Winds are especially a problem when coming out of tunnels EXPLANATION: Strong winds make it difficult to stay in your lane. The problem is usually worse for lighter vehicles. This problem can be especially bad coming out of tunnels.

Which of these is a proper use of vehicle lights and flashers? A. Turning on your headlights during the day when visibility is reduced due to rain or snow B. Flashing you break lights to wan someone behind you of a hazard that will require slowing down C. Flashing your break lights to warn someone behind you that you're going to stop on the road D. All answers are correct

D. All answers are correct EXPLANATION: Warn following drivers by flashing your brake lights, don't stop suddenly. If you see a hazard that will require slowing down, warn the drivers behind by flashing your brake lights. At dawn, dusk, in rain, or snow, you need to make yourself easier to see so turn on your lights.

Your brakes can get wet when you drive through a heavy rain. What can this cause when the brakes are applied? A. Wheel lockup B. Trailer jackknife C. Lack of braking power D. All answers are correct

D. All answers are correct EXPLANATION: When driving in heavy rain or deep standing water, your brakes will get wet. Water in the brakes can cause the brakes to be weak, to apply unevenly, or to grab. This can cause lack of braking power, wheel lockups, pulling to one side or the other, and jackknife if you pull a trailer.

You are checking your brakes and suspension system for a pre-trip inspection. Which of these statements is true? A. Brake shoes should not be worn dangerously thin B. Brake pads should not have brake fluid on them C. One missing leaf in a leaf spring can be dangerous D. All answers are correct and true

D. All answers are correct and true EXPLANATION: Brake pads should not be dangerously this or have fluid on them, and a missing leaf in the leaf spring suspension is very dangerous.

It has just reached freezing. Which of the following areas may be slippery? A. A wet- looking road B. A bridge C. A shaded area D. All of the above

D. All of the above EXPLANATION: Here are some signs of slippery roads: shaded areas, bridges, melting Ice, black Ice makes the road look wet, and just after rain begins.

If you are confronted by an aggressive driver, what should you do? A. Avoid eye contact B. Call the police from your cell phone if you can do it safely C. Ignore rude gestures and refuse to react negatively D. Do all of the above

D. Do all of the above EXPLANATION: First and foremost, make every attempt to get out of their way. Do not challenge them by speeding up, avoid eye contact, ignore gestures and refuse to react to them, and report aggressive drivers to the appropriate authorities

How can you start moving without rolling backward? A. Engage he clutch before removing your foot from the brake B. Apply the trailer brake hand valve C. Set the parking brake whenever D. Do all the above

D. Do all the above EXPLANATION: Don't roll back when you start. You may hit someone behind you. If you have a manual transmission vehicle, partly engage the clutch before you take your right foot off the brake. Put on the parking brake whenever necessary to keep from rolling back. Release the parking brake only when you have applied enough engine power to keep from rolling back

While driving at night, which lights should you use as often as you can? A. Low beams B. Novelty lights C. Emergency flashers D. High beams

D. High beams EXPLANATION: Some drivers make the mistake of always using low beams. This seriously cuts down on their ability to see ahead. Use high beams when it is safe and legal to do so. Use them when you are not within 500 feet of an approaching vehicle.

Which of the following statements about an escape ramp is FALSE? A. It may turn uphill B. It may be located a few miles from the top of a downgrade C. It may be made of soft gravel D. It is not useful if you are traveling too fast

D. It is not useful if you are traveling too fast EXPLANATION: Your best hope is an escape ramp. If there is one, there will be signs telling you about it. Use it. Ramps are usually located a few miles from the top of the downgrade. Escape ramps save lives, equipment and cargo.

You are driving on a two-lane road. An oncoming driver drifts into your lane and is headed straight for you. Which of these is generally the best action? A. Hard braking B. Steer into the oncoming lane C. Steer on the left shoulder D. Steer to the right

D. Steer to the right EXPLANATION: If an oncoming driver has drifted into your lane, a move to your right is best. If that driver realizes what has happened, the natural response will be to return to his or her own lane.

What is counter steering? A. Turning the steering wheel counterclockwise B. Steering in the opposite direction from what other drivers expect you to do C. Using the steering axle brakes to prevent over steering D. Turning the wheel in the opposite direction after steering to avoid a traffic emergency

D. Turning the wheel in the opposite direction after steering to avoid a traffic emergency EXPLANATION: Be prepared to "counter-steer," that is, to turn the wheel back in the other direction, once you've passed whatever was in your path. You should think of emergency steering and counter-steering as two parts of one driving action.

You should stop driving: A. After 5 hours B. After 7 hours C. After 9 hours D. When you become sleepy

D. When you become sleepy EXPLANATION: If you look sleepy, or you just feel sleepy, stop driving! You are in a very dangerous condition. The only safe cure is to sleep.

The new BAC or blood alcohol concentration for commercial drivers to be considered intoxicated when driving a commercial vehicle is: A. .04 B. .01 C. .10

A. .04 EXPLANATION: It is illegal to operate a CMV if your blood alcohol concentration (BAC) is .04% or more. If you operate a CMV, you shall be deemed to have given your consent to alcohol testing.

To prevent shifting, there should be at least one tie down for every _____ feet of cargo. A. 10 B. 15 C. 18

A. 10 EXPLANATION: Cargo should have at least one tie-down for each ten feet of cargo. Make sure you have enough tiedowns to meet this need.

How many red reflective triangles should you carry? A. 3 B. 1 C. 4

A. 3 EXPLANATION: Safety requirements call for three red reflective triangles.

When should you wear seat belts? A. Any time you are in a moving vehicle B. Only in states where it is required C. Only when traveling on a highway

A. Any time you are in a moving vehicle EXPLANATION: Use Your Seatbelt! The driver's seat should have a seat belt. Always use it for safety

Containerized loads A. Are typically used for freight caried partway by rail or ship B. Should come with their own tie- down devices C. Do not need to be inspired or secured by the driver

A. Are typically used for freight caried partway by rail or ship EXPLANATION: Containerized loads generally are used when freight is carried part way by rail or ship. Delivery by truck occurs at the beginning and/or end of the journey.

Dry bulk tanks and hanging meat A. Are unstable loads B. Do not require special care C. Have low centers of gravity

A. Are unstable loads EXPLANATION: Hanging meat and dry bulk can be a very unstable load with a high center of gravity. Particular caution is needed on sharp curves such as off ramps and on ramps. Go slowly.

Which of the following should you NOT do if you experience a tire failure? A. Brake hard and immediately B. Be aware a tire has failed C. Stay of the brake pedal D. Hold the steering wheel firmly

A. Brake hard and immediately EXPLANATION: To respond to tire failure: you must immediately: hold the steering wheel firmly, stay off the brake, and check the tires after you've come to a stop.

Some liquid tanks are divided into several smaller tanks by: A. Bulkheads B. Baffles C. Containers

A. Bulkheads EXPLANATION: Some liquid tanks are divided into several smaller tanks by bulkheads. When loading and unloading the smaller tanks, the driver must pay attention to weight distribution.

What would you use to put out a gasoline fire? A. Dirt B. Water C. Nothing

A. Dirt EXPLANATION: Gasoline fires may be extinguished by smothering with wet rags, woolen cloth, sand, earth or ashes.

The most common cause of serious vehicle skids is A. Driving too fast for road conditions B. Poorly adjusted brakes C. Bad tires D. Poorly designed roads

A. Driving too fast for road conditions EXPLANATION: A skid happens whenever the tires lose their grip on the road. Most serious skids result from driving too fast for road conditions. Drivers who adjust their driving to conditions don't overaccelerate and don't have to over-brake or oversteer from too much speed.

Which of the following is a key steering component? A. Gear box B. Bearing plate C. Torque rod D. Leaf spring

A. Gear box EXPLANATION: The gear box is part of the steering system, and other choices are parts of the suspension system.

What might happen if you swing wide to the left before you turn right? A. Someone might try to pass you on your right B. You might damage your leaf springs C. Someone might try to pass you on your left D. All of eh above might happen

A. Someone might try to pass you on your right EXPLANATION: If you are driving a truck or bus that cannot make the right turn without swinging into another lane, turn wide as you complete the turn. Don't turn wide to the left as you start the turn. A following driver may think you are turning left and try to pass you on the right.

Which of these statements about crossing or entering traffic with a heavy vehicle is true? A. Heavy vehicles need larger gaps in traffic than cars B. The best way to cross traffic is to pull the vehicle partway across the road and block one lane while waiting for the other to clear C. The heavier your load, the smaller the gap needed to cross traffic D. Because heavy vehicles are easy to see, you can count on other drivers to move out of your way or slow down for you

A. Heavy vehicles need larger gaps in traffic than cars EXPLANATION: Because of slow acceleration and the space large vehicles require, you may need a much larger gap to enter traffic than you would in a car. Acceleration varies with the load, allow more room if your vehicle is heavily loaded. Before you start across a road, make sure you can get all the way across before traffic reaches you.

Some traffic emergencies may require you to leave the road. Which of these is a good thing to remember? A. If you must leave the road, try to get all wheels off the pavement or at least one side of vehicles tires off the road B. Brake gently to avoid skidding C. Use hard braking if you are moving at a speed greater that 20 -mph D. Most shoulders will not support a large vehicle

A. If you must leave the road, try to get all wheels off the pavement or at least one side of vehicles tires off the road EXPLANATION: In some emergencies, you may have to drive off the road. It may be less risky than facing a collision with another vehicle. Most shoulders are strong enough to support the weight of a large vehicle and, therefore, offer an available escape route.

If you are being tailgated, you should: A. Increase the space in front of you B. Flash your break lights C. Speed up D. Signal the tailgater when it is safe to pass

A. Increase the space in front of you EXPLANATION: If you find yourself being tailgated, here are some things you can do to reduce the chances of a crash: avoid quick changes, increase your following distance opening room in front of you will make it easier for the tailgater to get around you, don't speed up

36. According to the driver's manual, why should you limit the use of your horn? A. It can startle other drives B. It wears down the battery C. The horn is not a good way to let others know you are there

A. It can startle other drives EXPLANATION: Your horn can let others know you're there. It can help to avoid a crash. Use your horn when needed. However, it can startle others and could be dangerous when used unnecessarily.

A moving vehicle ahead of you has a red triangle with an orange center on the rear. What does this A. It may be a slow-moving vehicle B. The vehicle is hauling hazardous material C. It is a law enforcement vehicle

A. It may be a slow-moving vehicle EXPLANATION: Some vehicles, by their nature, are slow and some of these will have the "slow moving vehicle" symbol to warn you. This is a red triangle with an orange center.

Which of these is a good rule to follow when driving at night? A. Keep your speed slow enough that you can stop within the range of your headlights B. Look directly at oncoming headlights only briefly C. Wear sunglasses D. Keep your instrument lights bright

A. Keep your speed slow enough that you can stop within the range of your headlights EXPLANATION: You should always be able to stop within the distance you can see ahead. At night, you can't see as far with low beams as you can with high beams. When you must use low beams, slow down.

You should inspect wheel bearing seals for A. Leaks B. Broken leaf springs C. Twisted axles D. Tears

A. Leaks EXPLANATION: Check wheel bearing seals to make sure they are not leaking.

The parking brake should be tested while the vehicle is: A. Parked B. Moving slowly C. Going downhill D. Moving at highway speed

A. Parked EXPLANATION: To test the parking brakes: Fasten safety belt, set parking brake, release trailer parking brake, Place vehicle into a low gear, gently pull forward against parking brake to make sure the parking brake holds. If it doesn't hold vehicle, it is faulty; get it fixed.

Total stopping distance equals A. Perception distance + reaction distance = braking distance B. Reaction distance + braking distance C. Reaction distance + viewing distance + braking distance D. Braking distance + stopping distance

A. Perception distance + reaction distance = braking distance EXPLANATION: Stopping distance is the sum of your Perception Distance + Reaction Distance + Braking Distance. In vehicles with air brakes you must include the brake lag distance.

Under-loaded front axles can cause the following: A. Poor traction B. Too much play in the steering wheel is not a problem C. Damage to the tires D. All answers are correct

A. Poor traction EXPLANATION: Under-loaded front axles can make the steering axle weight too light to steer safely.

You are checking your wheels and rims for a pre-trip inspection. Which of these statements is true? A. Rust around wheel nuts may mean that they are loose B. Cracked wheels or rim scan be used if they have been welded C. A vehicle can be safely driven with one missing lug nut on a wheel D. Mismatched lock rings can be used on the same vehicle

A. Rust around wheel nuts may mean that they are loose EXPLANATION: When checking the wheels and rims check for: damaged rims. rust around wheel nuts may mean the nuts are loose--check tightness, missing clamps, spacers, studs, or lugs, mismatched, bent, or cracked lock rings, and wheels or rims that have had welding repairs are not safe.

Convex curved mirrors A. Show a wider area than flat mirrors B. Make objects appear larger than they really are C. Make objects appear closer than they really are

A. Show a wider area than flat mirrors EXPLANATION: Many large vehicles have curved mirrors that show a wider area than flat mirrors. This is often helpful, but everything appears smaller in a convex mirror than it would if you were looking at it directly. Things also seem farther away than they really are.

You are driving a heavy vehicle and must exit a highway using an off-ramp that curves downhill. You should: A. Slow down to a safe speed before the turn B. Slow to the posted speed limit for the off-ramp C. Come to a full stop at the top the ramp D. Wait until are in the curve before downshifting

A. Slow down to a safe speed before the turn EXPLANATION: When exiting the expressway: Make necessary traffic checks, use proper signals, decelerate smoothly in the exit lane.

Inspect your cargo after you have driven A. 25 miles B. 50 miles C. 100 miles D. No answers are correct

B. 50 miles EXPLANATION: Inspect the cargo and its securing devices within the first 50 miles after beginning a trip. Make any adjustments needed.

8. What is the average reaction distance? A. 32 feet B. 61 feet C. 93 feet

B. 61 feet EXPLANATION: 3⁄4 second to 1 second. At 55 mph this accounts for 61 feet traveled.

You are driving a new truck with a manual transmission. What gear will you probably have to use to take a long downhill grade? A. The same gear you would use to climb the hill B. A lower gear than you would use to climb the hill C. A higher gear you would use to climb the hill

B. A lower gear than you would use to climb the hill EXPLANATION: Drivers of modern trucks may have to use lower gears going down a hill than would be required to go up the hill.

Your emergency kit does NOT need to include A. A fire extinguisher B. A spare jacket C. Spare electrical fuses D. Warning devices

B. A spare jacket EXPLANATION: Vehicles must be equipped with emergency equipment. Look for: fire extinguisher(s), spare electrical fuses (unless equipped with circuit breakers), and warning devices for parked vehicles.

12. If you are convicted for driving under the influence while driving a commercial vehicle, and this is your first offense, you will most likely get: A. A warning B. At least a one-year suspension of your cdl C. A fine of $500.00

B. At least a one-year suspension of your cdl EXPLANATION: You will lose your CDL for at least one year for a first offense for: Driving a CMV if your blood alcohol concentration is .04% or higher or driving a CMV under the influence of alcohol.

Whenever you stop for a break during your trip, you should A. Call in and check with dispatch B. Check critical items such as the tires, breaks, and cargo tie-downs C. Check critical items such as the windshield wipers, heart, and defroster

B. Check critical items such as the tires, breaks, and cargo tie-downs EXPLANATION: For an e-route inspection: check the tires, wheels, and truck body for signs of heat whenever you stop during a trip.

Your vehicle is in a traffic emergency and may collide with another vehicle if you do not act. Which of these is a good rule to remember at such a time? A. Stopping is always the safest action in a traffic emergency B. Heavy vehicles can almost always turn more quickly than they can stop C. Leaving the road is always riskier than hitting another vehicle

B. Heavy vehicles can almost always turn more quickly than they can stop EXPLANATION: When you don't have enough room to stop, you may have to steer away from what's ahead. Remember, you can almost always turn to miss an obstacle more quickly than you can stop.

41. What happens when tar heats up? A. It will give the tires more traction B. It makes the road more slippery C. It will make the tires stick to the road

B. It makes the road more slippery EXPLANATION: Tar in the road pavement frequently rises to the surface in very hot weather. Spots where tar "bleeds" to the surface are very slippery.

Do empty trucks have the best braking? A. Yes, but only on wet surfaces B. No C. Yes, but only if the trucks are newer than 1998 D. Yes

B. No EXPLANATION: Empty trucks require greater stopping distances because an empty vehicle has less traction.

Which of these can cause a fire? A. Under- inflated tires B. Loose fuel cap C. Electrical short - circuits D. All answers are correct

D. All answers are correct EXPLANATION: Under-inflated tires, loose fuel connections, and electrical short- circuits can all lead to fires.

You must park on the side of a level, straight, two lane road. Where should you place the three reflective triangles? A. One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 200 feet to the rear B. One within 10 feet of the rear vehicle, one about 100 feet to the rear, and one about 100 feet from the front of the vehicle C. One about 50 feet of the vehicle, one about 100 feet to rear, and one about 100 feet from the front of the vehicle D. One within 10 feet of front of the vehicle, one about 200 feet from the front, and one about 100 feet to the rear

B. One within 10 feet of the rear vehicle, one about 100 feet to the rear, and one about 100 feet from the front of the vehicle EXPLANATION: If you stop on a two-lane road carrying traffic in both directions or on an undivided highway, place warning devices within 10 feet of the front or rear corners to mark the location of the vehicle and 100 feet behind and ahead of the vehicle, on the shoulder or in the lane you stopped in.

Tie downs must be of the proper type and strength. The combined strength of cargo tie downs must be strong enough to lift. A. The weight of the cargo tied down B. One- and one-half times the weight of the cargo tied down C. Twice the weight of the cargo tied down D. Three times the weight of the cargo tied down

B. One- and one-half times the weight of the cargo tied down EXPLANATION: Tie-downs must be of the proper type and proper strength. Federal regulations require the aggregate working load limit of any securement system used to secure an article or group of articles against movement must be at least one and one- half times the weight of the article or group of articles.

You do not have a hazardous materials endorsement on your commercial driver's license. When can you drive a vehicle hauling hazardous materials? A. Never B. Only when the vehicle does not require placards C. Only when the shipment will not cross state lines

B. Only when the vehicle does not require placards EXPLANATION: You can drive a vehicle that carries hazardous materials if it does not require placards. If it requires placards, you cannot drive it unless your driver license has the hazardous materials endorsement.

Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake pedal and find that it goes to the floor. Which of these statements is true? A. You should not downshift if you have an automatic transmission B. Pumping the brake pedal may bring the pressure up so you can stop the vehicle C. The parking brake will not work either because it is part of the same hydraulic system

B. Pumping the brake pedal may bring the pressure up so you can stop the vehicle EXPLANATION: Sometimes pumping the brake pedal will generate enough hydraulic pressure to stop the vehicle.

The safety release valve is located on the Air tanks and is used by? A. Pulling a hand valve B. Self-operated when the air pressure is above 150 PSI C. Must be pulled after every working day

B. Self-operated when the air pressure is above 150 PSI EXPLANATION: A safety relief valve is installed in the first tank the air compressor pumps air to. The safety valve protects the tank and the rest of the system from too much pressure. The valve is usually set to open automatically at 150 psi.

A GPS device A. Should have a screen larger than 4 inches B. Should be designed for truck navigation C. Should be made in the USA

B. Should be designed for truck navigation EXPLANATION: Most GPS devices are made for cars or other smaller vehicles, and so not have the size or weight of large vehicles programmed in. Make sure your GPS device is designed for large commercial vehicles.

How do you correct a rear wheel acceleration skid? A. Apply more power to the wheels B. Stop accelerating C. Apply the brake D. Downshift

B. Stop accelerating EXPLANATION: Skids caused by acceleration usually happen on ice or snow. Taking your foot off the accelerator can easily stop them. If it is very slippery, push the clutch in. Otherwise, the engine can keep the wheels from rolling freely and regaining traction.

Axle weight means the following? A. The weight transmitted to the tires from the axel B. The weight transmitted to the ground by one axel or one set of axel C. Both above D. No answer are correct

B. The weight transmitted to the ground by one axel or one set of axel EXPLANATION: Axle Weight is the weight transmitted to the ground by one axle or one set of axles

No matter how small the cargo is, it should have at least: A. One tie down B. Two tie downs C. Small loads do not have to have tie downs

B. Two tie downs EXPLANATION: No matter how small the cargo, it should have at least two tie-downs.

You are driving a heavy vehicle with a manual transmission. You must stop the vehicle on the shoulder while driving on an upgrade. Which of these is a good rule to follow when putting it back in motion? A. Keep the clutch slipping while slowly accelerating B. Use the parking brake to hold the vehicle until the clutch engages C. Let the vehicle roll backwards a few feet before you engage the clutch D. Let the vehicle roll backwards a few feet before you engage the clutch, but turn the wheel so that the back moves away from the roadway

B. Use the parking brake to hold the vehicle until the clutch engages EXPLANATION: Keeping the parking brake set until you can feel the pull of the vehicle against the brakes will help you get moving on an uphill grade without rolling backwards.

Where or when should you test the stopping action of your service brakes? A. In a parking lot when the vehicle is not moving B. When the vehicle is moving at about 5 mph C. At a special break testing center only

B. When the vehicle is moving at about 5 mph EXPLANATION: Wait for normal air pressure, release the parking brake, move the vehicle forward slowly about five mph, and apply the brakes firmly using the brake pedal. Note any vehicle "pulling" to one side, unusual feel, or delayed stopping action.

In snow and ice, you should reduce your speed by? A. 1/3 B. 1/ 4 C. 1/ 2

C. 1/ 2 EXPLANATION: On packed snow, reduce speed by a half, or more. If the surface is icy, reduce speed to a crawl and stop driving as soon as you can safely do so.

How far ahead should you look while driving? A. 7 to 12 B. 5 to 10 C. 12 to 15 D. 10 to 12

C. 12 to 15 EXPLANATION: Most good drivers look at least 12 to 15 seconds ahead. That means looking ahead the distance you will travel in 12 to 15 seconds

How far should a driver look ahead of the vehicle while driving? A. 6-9 seconds B. 9-12 seconds C. 12-15 seconds

C. 12-15 seconds EXPLANATION: Most good drivers look at least 12 to 15 seconds ahead. That means looking ahead the distance you will travel in 12 to 15 seconds.

10. The distance that you should look ahead of your vehicle while driving amounts to about _____ at highway speed. A. One Block B. 500 feet C. 1⁄4 feet

C. 1⁄4 feet EXPLANATION: Most good drivers look at least 12 to 15 seconds ahead. That means looking ahead the distance you will travel in 12 to 15 seconds. At lower speeds, that's about one block. At highway speeds it's about a quarter of a mile.

Which of these is a good rule to follow when using a fire extinguisher? A. Keep it as close to the fire as possible B. Stay downwind of the fire C. Aim at the base of the fire

C. Aim at the base of the fire EXPLANATION: Here are some rules to follow in putting out a fire: When using the extinguisher stay as far away from the fire as possible and aim at the source or base of the fire not up in the flames.

The basic two reasons to cover your cargo are 1. to protect the cargo from the weather and 2. A. Protect people from spilled cargo B. Protect the roadway from spilled cargo C. Protect vehicle following you from spilled cargo D. All answers are correct

D. All answers are correct EXPLANATION: There are two basic reasons for covering cargo: to protect people from spilled cargo, and to protect the cargo from weather. Spill protection is a safety requirement in many states. Be familiar with the laws in the states you drive in. Bottom of Form

How many tie-downs are required for a 20-foot load? A. 4 B. 3 C. 1 D. 2

D. 2 EXPLANATION: Cargo should have at least one tie-down for each ten feet of cargo. Make sure you have enough tiedowns to meet this need. For a 20-foot load you would need at least 2 tie downs.

You are driving a 40-foot vehicle at 45 mph. Driving conditions are ideal. What is the least amount of space that you should keep in front of your vehicle to be safe? A. 2 seconds B. 3 seconds C. 4 seconds D. 5 seconds

D. 5 seconds EXPLANATION: One good rule says you need at least one second for each 10 feet of vehicle length at speeds below 40 mph. At greater speeds, you must add 1 second for safety.

The amount of liquid to load into a tank depends on: A. The amount of liquid will expand in transit B. The weight of the liquid C. The legal weight limits D. All answers are correct

D. All answers are correct EXPLANATION: A full tank of dense liquid (such as some acids) may exceed legal weight limits. The amount of liquid to load into a tank depends on: the amount the liquid will expand in transit, the weight of the liquid, legal weight limits.

You must inspect your cargo: A. Before starting B. Every hour or 150 miles C. After every break D. All answers are correct

D. All answers are correct EXPLANATION: As part of your Vehicle inspection, make sure the truck is not overloaded and the cargo is balanced and secured properly. You need to inspect again: after you have driven for 3 hours or 150 miles, and after every break you take during driving.

On which fires can you use the ABC fire extinguisher? A. Electrical fires B. Burning fires C. Burning cloth D. All answers are correct

D. All answers are correct EXPLANATION: Class A is for trash, wood and paper, Class B is for liquids and gases, and Class C is for energized electrical sources, so all answers are correct.

Which of these statements about speed management is true? A. On wet road you should reduce your speed by about 1/3 B. On packed snow you should reduce your speed by about 1⁄2 C. When the road id slippery it will take longer to stop, and it will be harder to turn without skidding D. All answers are correct

D. All answers are correct EXPLANATION: It will take longer to stop, and it will be harder to turn without skidding, when the road is slippery. Reduce speed by about one-third on a wet road. On packed snow, reduce speed by a half, or more. If the surface is icy, reduce speed to a crawl and stop driving as soon as you can safely do so.

Too much weight on the steering axle can cause the following: A. Hard steering B. Damage to the steering axle C. Damage to the tires D. All answers are correct

D. All answers are correct EXPLANATION: Poor weight balance can make vehicle handling unsafe. Too much weight on the steering axle can cause hard steering. It can damage the steering axle and tires.

There are three types of vehicle inspections, which one is one of them? A. Pre-trip B. En-route C. Post-trip D. All answers are correct

D. All answers are correct EXPLANATION: Pre-trip is an inspection before you leave, en-route occurs during your daily travel, and post-trip happens at the end of your day.

Cargo covers: A. Protect people from spilled cargo B. Protect cargo from weather C. May be required by law D. All answers are correct

D. All answers are correct EXPLANATION: There are two basic reasons for covering cargo: to protect people from spilled cargo, and to protect the cargo from weather. Spill protection is a safety requirement in many states. Be familiar with the laws in the states you drive in.