North Dakota CDL DMV Knowledge Test Class B 2

The right lanes of a roadway are generally intended for vehicles traveling more slowly than surrounding traffic. If being slowed down by a heavy load, you should stay in the right lane.

When driving under foggy conditions, lights cannot be taken as a reliable indication of where the road is. The lights may be coming from a vehicle that has pulled off the road.

It is essential that your low pressure warning light function properly. After allowing the system to charge, you can test the warning signal by rapidly applying and releasing the brake pedal. This will release air from the braking system and the warning signal should come on when pressure drops to a dangerous level.

Hydroplaning is a phenomenon during which a vehicle's tires lose traction with the road surface and begin to glide along on water on the road. There does not have to be a large amount of water on the road for this to occur.

Front-end header boards, also known as "headache racks," protect drivers from moving cargo in the event of a crash or emergency stop.

Cargo on flatbed trailers or trailers without sides must be tied down to prevent it from shifting or falling in transit.

During the on-road driving test, you must listen to and follow the directions given by the examiner. They will never ask you to drive in an unsafe manner.

If brakes are used too much, they will overheat and become less effective. This is referred to as brake fade.

Always accelerate smoothly and gradually so that your vehicle does not jerk. Rough acceleration can cause mechanical damage.

If you double your speed, your braking distance will become four times longer. Similarly, the impact your vehicle would have in the case of a collision will also multiply by four.

If your vehicle gets stuck on railroad tracks for any reason, you should immediately exit the vehicle and walk away from the tracks. Contact the proper emergency authorities.

Frequent yawning is a warning sign of fatigue. If you become tired while driving, the only safe response is to stop and get some sleep. You cannot rely on artificial stimulants, like caffeine, to keep you alert because they will eventually wear off and leave you more tired than you originally were.

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.

The suspension system holds up the vehicle and its load while keeping the axles in place. Damage to a suspension system can be very dangerous.

When traveling at speeds below 40 mph, you should maintain at least one second of following distance for every 10 feet of your vehicle's length. At higher speeds, add an additional second.

An encroachment during the basic vehicle control skills test is when an exercise boundary line is touched or crossed by any portion of the applicant's vehicle. Every encroachment will be counted as an error.

Federal and state laws require that CMV drivers inspect their vehicles before every trip.

Most heavy vehicles with manual transmissions require double clutching to change gears. A driver should release the accelerator, push in the clutch, and shift into neutral at the same time. After releasing the clutch and allowing the vehicle to change to the necessary speed, the driver should push in the clutch, shift gears, then simultaneously release the clutch and accelerate.

Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when air tank pressure falls to a level between 20 and 45 psi. You can do this by chocking the wheels and releasing air from the braking system by stepping on and off the brake pedal. Once the pressure drops to an unsafe level, the parking brake valve should pop out and spring brakes should come on.

If another vehicle pulls out in front of you, it is appropriate to brake as long as there is room for your vehicle to stop while you are using the appropriate braking technique. However, if you do not have room to stop, swerving may be a safer response.

The securement of cargo must be checked before beginning a trip, within the first 50 miles of a trip, and then again every three hours or 150 miles.

Always slow down before entering a foggy area. Use low beam headlights, avoid passing others, and avoid stopping on the side of the roadway. It is safest to completely avoid driving under foggy conditions, if possible.

Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Tanks must be drained regularly to remove this build-up.

When accelerating, speed up smoothly and gradually so your vehicle does not jerk. Rough acceleration can cause mechanical damage.

Fog can quickly deteriorate drivers' ability to see the road, other drivers, and other hazards. Avoid driving in fog if at all possible.

When inspecting your vehicle's engine, check the belts for tightness and excessive wear. The amount of "give" that is safe for each belt in a given engine will vary, so learn what is appropriate for your vehicle.

Parking brakes should not be used in very wet weather when temperatures are below freezing. The brakes could become frozen in place, making it impossible to move the vehicle.

Before adding coolant to a system without a recovery or overflow tank, you must turn the engine off and wait until it cools. Use gloves or a thick cloth to protect your hands. To release the pressure seal, turn the radiator cap slowly to the first stop.

When inspecting your vehicle's engine compartment, be sure to check the oil level; the radiator coolant level and the condition of the hoses; the power steering fluid level and the condition of the hoses, if applicable; the windshield washer fluid level; the battery connections, fluid level, and tie-downs; the automatic transmission fluid level; and the condition and tightness of the belts. Additionally, check for any leaks in the engine compartment and cracked or worn electrical wiring insulation.

The height of a vehicle's center of gravity is very important to a driver's ability to safely handle the vehicle. Always distribute the weight of cargo as low as possible.

Black ice is a thin layer of ice that is clear enough for the road surface to be seen through it. A road covered in black ice may look like it is merely wet.

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.

If you see, hear, smell, or feel anything that could indicate trouble while you are driving, you should stop and inspect the source of the unusual occurrence.

For the safety of everyone on the road, it is essential that you maintain adequate cushions of space between your vehicle and other vehicles. This will help ensure that if you need to stop your vehicle, you will be able to do so without hitting someone else.

During the on-road driving skills test, you will be evaluated on your gear usage. Select a gear that does not rev or lug the engine; avoid grinding and clashing gears; and avoid shifting through turns or intersections.