North Dakota CDL Practice Test

Not quite. The answer is It makes the road slippery.

On hot days, tar in the pavement can rise to the surface and create a slippery film on the road surface.

Not quite. The answer is 0.40%

Most people with a BAC of 0.40% will pass out and some will even die.

Not quite. The answer is Neither of the above

The drag link and Pitman arm are two components of the steering system.

Not quite. The answer is 1

The Commercial Vehicle Safety Alliance (CVSA) developed the National Roadside Inspection Program, which defines eight different levels of inspections, each with its own list of items to be inspected. Level 1 is the most comprehensive. Both the driver and the vehicle are checked. The inspector checks the vehicle by a walkaround inspection and by getting physically underneath the vehicle to check for defects there. Level 2 is similar to Level 1, except the inspector doesn't get underneath the vehicle. Only a walkaround inspection is performed on the vehicle.

Not quite. The answer is Much more than under normal driving conditions

Wet roads can double your stopping distance. Slow down and greatly increase your usual following distance.

Not quite. The answer is take your foot off the accelerator.

If so much power is applied to the drive wheels that it overcomes the tires' grip of the road, the wheels will spin. This is more likely to occur if the road surface is slippery. To stop the drive wheels from spinning, take your foot off the accelerator. Accelerate slowly and gently from now on.

Not quite. The answer is There are blind spots that your mirrors cannot show you.

Mirrors can show a great deal around your vehicle, but there are still blind spots that you can't see. Keep an eye on all the vehicles around you that you can see, in case one of them starts to move into one of your blind spots. Also use a helper when backing.

Not quite. The answer is apply the parking brake.

Whenever you park your vehicle, set the parking brakes. There are only two exceptions: (1) If the brakes are very hot, applying the parking brakes might damage them. (2) If the brakes are wet, applying them in cold temperatures might cause them to freeze, immobilizing your vehicle. In these two situations, use wheel chocks instead.

Not quite. The answer is Pump the brake pedal.

If your hydraulic brakes fail while you're driving, try pumping the brake pedal to build up enough hydraulic pressure to stop your vehicle. If this fails, downshift to use engine braking and apply the parking brake, but release the parking brake before you lock the wheels. If all else fails, look for an escape route. Head for an escape ramp or an open field and let your vehicle slow to a stop.

Not quite. The answer is Your visibility

Always drive at a speed that lets you stop safely within the distance that you can see ahead. Otherwise, by the time you notice a hazard ahead of you, you may not be able to stop in time to avoid it.

Not quite. The answer is Too little weight on the tandem trailer axles

A skid happens whenever the tires lose traction (grip of the road). The type of skid depends on which tires lose traction. A front-wheel skid can be caused by driving too fast for conditions, such as in a sharp curve or turn. Other causes include insufficient tread on the front tires and insufficient cargo weight on the front axle. Too little weight on the trailer axles can cause the trailer to skid, especially on slippery roads.

Not quite. The answer is Someone might try to pass you on your right.

If you swing wide to the left, a driver may try to pass you on your right while you are turning. Instead, make the right turn with the rear of your vehicle as close to the curb as possible and turn wide as you complete the turn. This will deny drivers room on the right to try to pass you.

Not quite. The answer is To prevent you from overrunning the central island

Because of the length of your vehicle, its rear wheels follow a significantly shorter path than its front wheels, a phenomenon known as off-tracking. While you are negotiating the curves of a roundabout, you might overrun the central island if it weren't for the central apron. The central apron (also called a truck apron) is a special area surrounding the central island, intended for use only by large vehicles. While driving through a roundabout, you can legally and safely drive over the apron if necessary without hitting the central island. The apron is usually slightly raised to discourage cars from driving on it while still making it possible for trucks to drive on it.

Not quite. The answer is One block

While driving, you should scan the road 12–15 seconds ahead. At typical speeds in urban areas, your vehicle will travel about one block in 12–15 seconds. At 60 mph, your vehicle will travel a quarter of a mile in 15 seconds.

Not quite. The answer is One block

While driving, you should scan the road 12–15 seconds ahead. At typical speeds in urban areas, your vehicle will travel about one block in 12–15 seconds. At 60 mph, your vehicle will travel a quarter of a mile in 15 seconds.

Not quite. The answer is 10 feet, 100 feet, and 200 feet toward approaching traffic

This is required by Federal Motor Carrier Safety Regulation 49 CFR 392.22. This regulation also specifies where to place warning devices on other types of roadways such as undivided two-way roads and curves. (These situations are also covered in section 2.5.2 of the North Dakota Commercial Drivers License Manual.)

Not quite. The answer is 11 hours

According to the Hours of Service (HOS) regulations, the driver of a cargo-carrying vehicle must not drive after a period of 14 consecutive hours after coming on duty following 10 consecutive hours off duty. The driver may not drive for more than 11 hours during this on-duty period.

Source: "Summary of Hours of Service Regulations," FMCSA, https://www.fmcsa.dot.gov/regulations/hours-service/summary-hours-service-regulations

Not quite. The answer is Mirrors

In the North American Standard Out-of-Service Criteria, by CVSA, the critical vehicle inspection items are the most critical systems in the vehicle. These are the brakes, the cargo securement, the driveline, the suspension, the steering, and others. Mirrors are not considered a critical vehicle inspection item. To pass inspection, the vehicle must not have any defects in any of these critical vehicle inspection items. Furthermore, if inspectors discover a defect in one of these items that is likely to cause a crash or breakdown, they will place the vehicle out of service.

Not quite. The answer is Driving in a selfish or pushy manner

Aggressive driving is driving in a bold, selfish, or pushy manner, which is dangerous enough. Road rage is even worse: intentionally driving to harm someone or physically assaulting someone in his or her vehicle. Examples of aggressive driving include weaving from lane to lane without signaling, purposely blocking another vehicle from changing lanes, and honking the horn to express annoyance, anger, or frustration. Examples of road rage include deliberately ramming another vehicle and exiting one's vehicle to directly confront another driver. Distracted driving is driving while some distraction takes your attention away from the driving task.

Not quite. The answer is Tractor and trailer

Either the tractor or the trailer can skid. If the drive wheels of the tractor lock, the tractor may skid, and the trailer may push the tractor sideways, causing a tractor jackknife. On the other hand, if the trailer wheels lock, the rear of the trailer may swing sideways, out of your lane. (This is more likely if the trailer is empty or lightly loaded.) This will result in a trailer jackknife.