Illinois CDL Permit General Knowledge Test

A pre-trip inspection should include:

A check of the engine oil level. When examining the engine compartment during a pre-trip inspection, you should check the engine oil level, the radiator coolant level, and the condition of the hoses.

Black ice is:

A thin layer of ice on the road. Black ice is a layer of ice that is thin and clear enough for the road to be visible through it. The surface will look like a wet road. Always be alert to black ice if the road looks wet when the temperature is below freezing.

A school bus driver may not operate a school bus with a minimum blood alcohol concentration (BAC) of:

Any detectable amount. It is illegal to operate a school bus if your blood alcohol concentration (BAC) is above 0.00 percent. Operating a bus with a BAC of any detectable amount may result in license disqualification.

When loading cargo, weight should be placed:

As low as possible. A vehicle is vulnerable to tipping over if its center of gravity is too high. To prevent this, you should distribute the weight of your cargo evenly and as low as possible.

During the steering box portion of the vehicle inspection test, you should not:

Assume all cotter keys are present. Before a trip, ensure that the steering box is securely mounted. Check for missing nuts, bolts, and cotter keys. Be sure that there are no power steering fluid leaks and that there is no damage to power steering hoses.

When passing another vehicle, you should:

Assume the other driver doesn't see you. It is always safest to assume that other drivers, bicyclists, and pedestrians don't see you. Be prepared for the possibility that they may suddenly move into your path. It may be safe to lightly tap your horn or flash your lights as you pass.

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. Do not assume that posted height clearances are accurate. If the road was repaved after the sign was posted, or if there is packed snow on the ground, the actual height of the opening may be different than what is indicated. If you are not confident that your vehicle will be able to safely clear an upcoming bridge or overpass, you should slow down and find another path, if possible.

The trailer hand valve should:

Be used only to test the trailer brakes. The trailer hand valve works the trailer brakes but should only be used when testing them. Using it while driving could create a skid. Never use the trailer hand valve while parking because doing so may release the air pressure from the braking system, releasing the brakes that are holding the vehicle in place.

You should check and adjust your mirrors:

Before driving. Be sure to check your mirrors before beginning a drive. Your posture may change day to day and your mirrors may need to be adjusted.

Cargo being transported should be checked:

Before the trip and again within the first 50 miles of the trip. Cargo should be inspected before beginning a trip, within the first 50 miles of the trip, and every three hours or 150 miles traveled thereafter. Cargo should be inspected every time the driver stops to take a break. The driver of a truck transporting cargo is responsible for the cargo being safely secured throughout the trip.

A broken exhaust system:

Can allow poisonous fumes to enter the cabin. A broken exhaust system can let poisonous fumes into a vehicle's cab or sleeper berth. Be sure to inspect your exhaust system for any loose, broken, or missing parts.

Distracted driving:

Can be avoided by not engaging in complex conversations while driving. To reduce the risk of distraction, do not engage in complex or emotionally intense conversations while driving. Pre-programming radio stations before your trip and avoiding eating, drinking, or smoking while at the wheel can also help you avoid becoming distracted while driving. Remember that mental distractions that take your attention away from the task of driving can be just as dangerous as physical distractions.

When backing up, follow a turning trailer by:

Changing the direction of the steering wheel. When backing with a trailer, begin by turning the steering wheel in the direction opposite of the turn. Once the trailer starts to turn, reverse the direction of the steering wheel to follow the trailer.

One function of the emergency air line is to:

Control the emergency brakes. he emergency air line (also known as the supply line) has two functions. The first is to supply air to the trailer air tanks, and the second is to control the emergency brakes on combination vehicles.

If a vehicle is equipped with power steering, the hoses should be checked:

For leaks. When inspecting a vehicle with power steering, you should inspect the hoses, pumps, and fluid levels. Specifically check the hoses for leaks.

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. To let drivers behind you know that you plan to slow down, lightly tap your brake pedal a few times to flash your brake lights. It is important to communicate your intentions to other drivers.

When driving, it is important to:

Look to the front, sides, and rear of your vehicle. For safe driving, it is essential that you are aware of what is happening on all sides of your vehicle. In addition to watching the road ahead, you should frequently check your mirrors to monitor the road to the sides and to the rear of your vehicle.

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. When inspecting a trailer coupling, you should make sure the fifth wheel locking jaws are closed around the shank of the kingpin, not the head of the kingpin.

When coupling a trailer:

Make sure to couple matching glad hands. When coupling, make sure you couple matching glad hands. They are often color-coded to help drivers avoid mistakes. Typically, blue is used for service lines and red is used for emergency lines.

Too little weight on a steering axle can result in:

Poor traction. The weight of cargo in a vehicle needs to be balanced appropriately so that it does not interfere with the vehicle's safe handling. For example, if cargo is placed too far to the rear of a vehicle, the front axle will be under-weighted and the front wheels may not have enough traction for the driver to steer safely.

Bracing is used to:

Prevent items from moving in a trailer. Blocking and bracing are used to prevent cargo from shifting in transit. Blocking is used in the front, in the back, and on the sides of a piece of cargo to prevent movement. Bracing prevents movement by reaching from the upper portion of a piece of cargo to the floor and sides of the cargo compartment.

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. Check hydraulic brakes by pumping the brake pedal three times before applying firm pressure to the pedal for five seconds. The pedal should not move. If it does, there may be a leak or some other problem in the braking system.

When stopping a manual transmission vehicle, you should:

Push the clutch in when the engine is close to idle. When stopping, apply gradual pressure to the brake pedal and stop smoothly. If stopping a manual transmission vehicle, push the clutch in when the engine is close to idle.

One way to avoid becoming an aggressive driver is to:

Set realistic expectations regarding travel time. To help avoid frustration, which can lead to aggressive driving behavior, you should begin a trip with realistic expectations about your travel time. Plan ahead to allow time for potential traffic delays. Other strategies to help prevent aggressive driving behavior include driving an appropriate speed and keeping a reasonable following distance; avoiding making gestures at other drivers; and keeping your hands on the steering wheel.

What is the best way to stop if your brakes fail while you are driving downhill?

Steer onto an escape ramp. If your brakes fail on a downgrade, you will need to quickly find something outside that can stop your vehicle. An escape ramp is the best option. If no escape ramp is available, use the least hazardous available option, such as driving into an open field or side road that flattens out or turns uphill.

The "crack-the-whip" effect can:

Turn over a trailer. Trailers can overturn as a result of the "crack-the-whip" effect. The last trailer in a combination is the most prone to tip over due to this effect. Drivers should be aware of the rearward amplification of their specific vehicles and drive accordingly.

When backing with a trailer, you should begin by:

Turning the steering wheel in the direction opposite of the turn. When backing with a trailer, begin by turning the steering wheel in the direction opposite of the turn. Once the trailer starts to turn, reverse the direction of the steering wheel to follow the trailer.

The maximum amount of play that is safe on a 20-inch steering wheel is:

Two inches. A steering wheel with play of more than 10 degrees may be defective. On a 20-inch wheel, this is equal to about two inches of movement at the rim of the wheel

You should always use at least ____ to secure cargo on a flatbed trailer.

Two tie-downs. When transporting cargo on a flatbed trailer, you should use at least one tie-down for every 10 feet of cargo. Any cargo, no matter how small, should be restrained by a minimum of two tie-downs.

When it is difficult to see and you are traveling near other drivers, you should:

Use low beam lights. Use your low beam headlights when traveling near other drivers at times when it is difficult to see, such as at dawn, at dusk, or in poor weather conditions. Using the high beam setting under certain conditions could make it difficult for other drivers to see.

When starting an engine, oil pressure should come up to a normal level:

Within seconds. Look at your truck's gauges when starting the engine. The oil pressure in an engine should come up to a normal level within seconds of the vehicle's engine being started.

While operating a CMV:

You are always required to wear a safety belt. A safety belt is your best defense in the event of a collision. You must always wear a safety belt while operating a CMV.

If you remain in neutral for too long while switching gears:

You may have trouble putting the vehicle into the next gear. If you remain in neutral for too long while switching gears, you may have difficulty putting the vehicle into the next gear. If this happens, do not try to force the gear shift. Instead, return to neutral, release the clutch, increase the engine speed to match the road speed, and try again.

While driving a CMV:

You may not hold a cell phone to make a call. While driving a CMV, you may not make voice calls if you need to hold your phone or press more than one button to do so. Additionally, you may not send or read text messages while driving.

If you are disqualified from driving:

You must notify your employer within two business days. You must notify your employer within two business days if your license is suspended, revoked, or canceled, or if you are otherwise disqualified from driving.

How do ice cream trucks become hazardous to other drivers?

› Children often run toward an ice cream truck without looking for other traffic. Ice cream trucks can create hazardous conditions for other drivers because they attract children. Children often do not notice or pay attention to other vehicles on the roadway when running to or from ice cream trucks.

A ramp's posted speed limit:

› Is suitable for some vehicles, but may be too fast for a large CMV. Posted speed limits on exit and entrance ramps often show speeds that are safe to be driven by cars. However, these speed limits may be too fast for large or heavily-loaded vehicles and CMV drivers will likely need to slow down to a speed below the posted limit.

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. If you are found to have any detectable amount of alcohol in your system while operating a CMV but your blood alcohol concentration (BAC) is still below the legal limit of 0.04 percent, you will be put out-of-service for 24 hours. It is both illegal and dangerous to operate a motor vehicle while under the influence of alcohol.

Large combination vehicles take the longest amount of time to stop:

› When empty. Large combination vehicles take longer to stop when they are empty than when they are loaded. The decreased weight causes a vehicle's wheels to have decreased traction on the surface of the road.

What is reaction distance?

The distance you will travel between realizing you must brake and when you physically hit the brakes. Your vehicle's stopping distance can be calculated by adding together your perception distance, your reaction distance, and your vehicle's braking distance. Reaction distance is the distance traveled between the moment you mentally perceive a hazard and the moment you physically hit the brakes.

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. It is illegal to operate a CMV if your blood alcohol concentration (BAC) is 0.04 percent or higher. A first offense will result in the loss of your CDL for one year. A second offense will result in the loss of your CDL for life.

When conducting a pre-drive inspection:

The previous inspection report should be reviewed, if applicable. The first step of a vehicle inspection is to review the last vehicle inspection report. Only sign the report if noted defects are certified to have been repaired.

What happens when a vehicle hydroplanes?

The tires lose contact with the road. On a wet road, it is possible for a vehicle's tires to lose traction with the road surface and begin to glide along on the layer of water. This is referred to as hydroplaning. Hydroplaning can occur at speeds as low as 30 mph.

Mirror adjustment can only be checked properly if:

The trailer is straight. On a vehicle with one or more trailers, mirror adjustment can only be checked accurately if the trailers are straight. Mirror adjustment should be checked before the start of every trip.

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. For your own safety, when placing reflective warning triangles, you should carry them between your body and the oncoming traffic.

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. When inspecting a vehicle's suspension, you should look for broken or missing leaves in the leaf springs. Any defect of this kind is dangerous. If one-fourth or more of the leaves are missing from any leaf spring, the vehicle must be put out-of-service.

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 turning on your vehicle's engine, the lights on the dash should come on and then turn off. If the ABS malfunction light stays on, the system is not working properly. In the case of a truck with a trailer, if the yellow light on the left rear of the trailer stays on once the engine has been started, the system is not working properly.

Dry bulk tanks require special care because:

They have high centers of gravity. Driving with a dry bulk tank requires special care, both because dry bulk tanks have high centers of gravity and because their loads often shift in transit. Be especially careful when taking turns and curves while operating such a vehicle.

If transporting 30 feet of cargo on a flatbed trailer, you should use a minimum of ____ to restrain the cargo.

Three tie-downs. When transporting cargo on a flatbed trailer, you should use at least one tie-down for every 10 feet of cargo. Any cargo, no matter how small, should be restrained by a minimum of two tie-downs.

The most important reason to inspect your vehicle before a trip is:

To ensure safety. The most important reason to inspect your vehicle before a trip is to ensure the safety of yourself and others on the road. Safety inspections before every trip are required by state and federal laws.

You should cover cargo:

To protect the cargo from weather. You should cover your cargo to protect people from the cargo if it spills, as well as to protect the cargo from the weather.

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. When approaching your vehicle before an inspection, make note of its general condition and ensure that it is not damaged or leaning. Look under the vehicle for fresh leaks of oil, grease, or fuel. Check around the vehicle for hazards to movement, such as people, other vehicles, or low-hanging wires or tree limbs.

It is illegal to operate a CMV with a minimum blood alcohol content (BAC) of:

0.04 percent. Operating a CMV with a minimum blood alcohol content (BAC) of 0.04 percent is illegal and will result in loss of license for at least one year for a first offense. If you operate a CMV with any detectable amount of alcohol in your system while remaining below the legal limit of 0.04 percent, you will be put out-of-service for at least 24 hours.

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 When stopping your CMV on the side of a highway, warning devices must be placed 10 feet, 100 feet, and 200 feet behind the vehicle.

Scan the road ____ ahead of your vehicle.

12 to 15 seconds Good drivers scan the road at least 12 to 15 seconds ahead of their vehicles. Looking ahead will allow you to identify and react to hazards before meeting them. Be sure to specifically look for vehicles that are coming onto the highway, entering into your lane, or turning.

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 For safe operation, a commercial motor vehicle needs a tread depth of 4/32 of an inch in every major groove on the front tires, and a tread depth of 2/32 of an inch on other tires.

A tread depth of ____ should be in every major groove of a front tire.

4/32 of an inch For safe operation, a commercial motor vehicle needs a tread depth of 4/32 of an inch in every major groove on the front tires, and a tread depth of 2/32 of an inch on other tires

When driving on a wet road, you should reduce your speed by:

About one-third. Reduce your speed when traveling on surfaces that provide reduced traction. Reduce your speed by about one-third when driving on a wet road.

When making a turn, when should you cancel your turn signal?

After the turn is completed. When turning or changing lanes, you should signal early and signal continuously. Cancel your turn signal once the turn or lane change is complete.

In very hot weather, tires should be checked regularly because:

Air pressure may increase with the temperature. Air expands as it gets warmer, so the air pressure in your tires could reach dangerously high levels while being used in very hot weather. If this happens, stop and let your tires cool. Do not let air out of the tires, as this could result in the pressure dropping to an unsafe level once the tires cool down.

Move over laws require:

All vehicles to vacate the lane closest to an emergency vehicle that is stopped with its lights flashing. f an emergency vehicle with its lights on is stopped on the side of the road, move over laws require drivers to vacate the lane directly next to the vehicle, if possible. If a driver cannot move over safely, they must slow down and proceed with caution.

Accelerating roughly is:

Discouraged, as it may cause damage to the vehicle. When accelerating, speed up smoothly and gradually so your vehicle does not jerk. Rough acceleration can cause mechanical damage.

Before entering a curve, you should:

Downshift Always downshift before entering a curve. Decreasing your speed before entering the curve will allow you to maintain better control over the vehicle throughout the curve.

If driving so slowly that you could impede other drivers, you should:

Drive while using your four-way flashers. If you must drive so slowly that you will impede the flow of traffic, you should turn on your four-way flashers to alert drivers behind you (as long as local laws allow the use of flashers).

During a vehicle inspection, ensure that the landing gear is:

Fully raised. When inspecting a trailer during a vehicle inspection test, ensure that its landing gear has no missing parts and that it is fully raised. The crank handle should be secure and the support frame should not be damaged.

If driving through flowing water or a large puddle, you should:

Gently apply the brakes. It is best to avoid driving through large puddles or moving water. If there is no way to avoid driving through water, you should slow down, shift into a low gear, and gently apply the brakes. Pressing linings against the brake drums or discs will keep water, mud, silt, and sand from getting inside the brake mechanisms.

One way to prevent drowsiness while driving is to:

Get adequate sleep the night before the trip. Driving while fatigued can be extremely dangerous. Strategies for preventing drowsiness while driving include getting a full night's sleep before a trip; having someone ride with you; scheduling trips for times during which you are normally awake; and avoiding medications that may cause drowsiness. Exercising regularly can increase your energy levels and make you less likely to become tired while driving.

If you identify a distracted driver on the road, you should:

Give them plenty of room. If you encounter a distracted driver, make sure to give them plenty of room. Be very careful if you pass their vehicle because the driver may be unaware of your presence and drift into your lane.

When loading cargo, it is important to:

Know the weight capacity rating of the suspension system. It is a driver's responsibility to make sure their vehicle is not overloaded. They must be aware of legal weight limits and the maximum weight that their vehicle is rated to carry, including the weight capacity rating of the suspension system

If being tailgated, you should:

Increase the amount of space between your vehicle and the vehicle in front of you. If you are being tailgated, you should increase the distance between your vehicle and the vehicle ahead of you. This reduces the need for you to make sudden changes in speed or direction while making it easier for the tailgater to pass your vehicle.

A stopped bus:

Is a concern, whether passengers are visible or not. Always drive cautiously around a stopped bus. Passengers may cross in front of or behind it, and the bus may prevent them from seeing your vehicle.

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. Even if someone else loads cargo onto a vehicle, the driver is responsible for properly inspecting the cargo, ensuring that it is properly loaded and secured, and ensuring that it does not obscure their view or access to emergency equipment.

A cardboard box on the roadway:

May contain a heavy object that could damage your vehicle. Any foreign object on the road is potentially dangerous. For example, something seemingly harmless, such as a cardboard box or paper sack, could contain a hard or heavy object that could do serious damage to a vehicle.

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. If you think the road surface may be becoming icy but you are not certain, you can open your window and feel the front of the side mirror, mirror support, or antenna. If ice has formed on any of these items, the road is likely becoming icy as well.

Can you have more than one license?

Not have more than one license. A person cannot have more than one driver license at a time. States share information through a computer database to ensure that no person has more than one license. Violation of this law could result in fines or jail time.

A truck may need to be under the legal maximum weight limit when being driven:

On a mountainous road. Under some driving conditions, it may not be safe to operate a vehicle at its full legal maximum weight. Keep this in mind when driving in poor weather or on mountainous roadways.

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 At speeds below 40 mph, you should allow at least one second of following distance for every 10 feet of your vehicle. Follow the same formula when traveling at faster speeds, then add one additional second to your following distance. Remember that larger vehicles require more space to stop than smaller vehicles.

When driving on packed snow, you should reduce your speed by:

One-half or more. Reduce your speed when traveling on surfaces that provide reduced traction. Reduce your speed by one-half or more when traveling on packed snow.

What is road rage?

Operating a motor vehicle with the intent of doing harm to others. Aggressive driving is defined as operating a motor vehicle in a selfish, bold, or pushy manner. Road rage is defined as operating a motor vehicle with the intent of doing harm to others, or the intent of physically assaulting another driver or their vehicle.

When adjusting your mirrors before a trip:

Part of your vehicle should be visible in the mirrors. When properly adjusted, your mirrors should each display some part of your vehicle. Being able to see your own vehicle in your mirrors will give you a point of reference when judging the positions of other objects.

Parked delivery trucks may be hazardous because:

People are often in a hurry when exiting such trucks and may not look for other vehicles. Passing parked delivery or postal trucks can be dangerous because the driver may be in a hurry and pull into traffic without warning, or may they suddenly step out of the vehicle without checking for other traffic.

If a trailer begins to skid, the driver should:

Release the brakes. If your trailer starts to skid while you are braking, you should release the brakes and allow them to begin to regain traction. Once its wheels have regained their grip on the road, the trailer will begin to straighten out and follow the tractor.

Emergency equipment in a vehicle is:

Required. During a pre-trip inspection, you should check for emergency equipment, including spare electrical fuses; three red reflective triangles, six fuses, or three liquid burning flares; and at least one properly charged and rated fire extinguisher.

Air pressure in the ____ air line is controlled by either the foot brake or trailer hand brake.

Service. Air pressure in the service air line is controlled by either the foot brake or trailer hand brake. The service air line is also known as the control line or signal line. This line is connected to relay valves, which allow the trailer brakes to be applied more quickly than would otherwise be possible.

A pre-trip inspection:

Should be done in the same way every time. A pre-trip vehicle inspection should be done in the same way every time. Consistency will help a driver learn all of the proper steps and decrease the possibility of the driver forgetting to inspect something.

Headlights:

Should be on the high beam setting whenever possible. To improve visibility, you should use high beam headlights at night where it is safe and legal to do so. However, the glare from high beam lights can blind other drivers. You should dim your lights to their low beam setting when driving within 500 feet of an approaching vehicle.

When carrying a sealed load, the driver:

Should ensure the weight of the cargo does not violate weight limits. While a driver cannot inspect sealed loads, they can still ensure that the load does not exceed gross weight and axle weight limits.

When a vehicle is started, warning lights and buzzers:

Should turn off within a few seconds. After an engine is started, the warning lights and buzzers for oil, coolant, charging circuits, and the Anti-Lock Braking System (ABS) should go out right away.

What are placards?

Signs placed on a vehicle to identify cargo hazard. Placards are diamond-shaped warning signs that are placed on the outside of vehicles carrying hazardous materials. Placards are used to identify the specific hazard classes of the cargo being carried.

When backing with a trailer, turning toward the driver's side is encouraged because:

The driver will have the best possible view. When driving in reverse, it is always recommended that a driver backs their vehicle toward its left side. This will allow the driver the best possible view of the rear of their vehicle.

Who is responsible for inspecting a vehicle's cargo?

The driver. It is a driver's responsibility to inspect their cargo; recognize overloading or poorly balanced weight; know that the cargo is properly secured and not obscuring their view; and know that the cargo does not restrict access to emergency equipment. The driver is always responsible for their cargo, even if they were not the one who initially loaded and secured the cargo

When inspecting a power steering-equipped vehicle, you should be sure that:

The fluid is at the proper level. When inspecting a vehicle equipped with power steering, check the hoses, pumps, and fluid level. Be sure to check for and repair leaks before operating the vehicle.

When a combination vehicle goes around a corner:

The front and rear wheels move in different paths When a vehicle goes around a corner, the rear wheels follow a different path than the front wheels. This is called off-tracking. This effect is especially pronounced on vehicles with trailers

When passing a row of parked vehicles, a driver should:

Watch for signs of a person exiting a vehicle. You should be cautious when passing parked vehicles. A person may step out of a parked vehicle or out from between parked vehicles without looking for oncoming traffic. A driver may begin moving their vehicle before realizing you are there.

If convicted of a traffic violation, you must inform your employer:

Within 30 days. If you are convicted of any kind of traffic violation in any type of vehicle, you must notify your employer within 30 days of the incident. You must also inform your motor vehicle licensing agency within 30 days if the incident happened in another jurisdiction. This rule does not apply to parking infractions.

When driving:

You should always use turn signals to warn others about your intentions. t is important to communicate your intentions to others on the road. Make sure to signal before turning or changing lanes, even if no other vehicles are nearby.

Rollovers happen when:

You take a turn too fast. Rollovers are caused by operators turning too fast. To avoid rolling over, drive slowly on entrance ramps, on exit ramps, and around corners. Avoid making quick lane changes when towing trailers.

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. Most states have an Implied Consent Law, which means that by driving a vehicle on the state's roads, you have agreed to undergo a drug or alcohol test if a police officer asks you to do so. If you refuse to submit to a test, you will lose your operating privileges. Make sure you are aware of the laws for every state in which you drive.

After two violations of any state law regarding hand-held mobile phone use:

Your CDL will be disqualified. If you are twice convicted of violating any state law regarding hand-held mobile phone use, your CDL will be disqualified. Consequences will become more severe with subsequent violations.

Your CDL will be revoked if:

Your privilege to operate your personal vehicle is revoked. If your privilege to operate your personal vehicle is revoked, canceled, or suspended due to moving traffic violations, you will also lose your CDL. This does not apply if your license is revoked due to parking violations.