New Hampshire CDL DMV Knowledge Test Class A 1

Tire load is the maximum weight that a tire can safely carry at a specified pressure. This will be stated on the side of a tire.

When exiting your vehicle during the basic vehicle control skills test, you must face the vehicle and maintain three points of contact at all times. If your testing vehicle is a bus, you must maintain contact with the handrail. Exiting the vehicle incorrectly may result in automatic failure of the basic control skills test.

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.

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.

In a vehicle with air brakes, the brake lights are activated when the brake pedal is pushed and air pressure moves an electric switch. With the application of air pressure, the switch will then turn on the brake lights.

Cargo covers should not flap in the wind. They could tear loose, not only uncovering the cargo but also blocking the views of drivers.

A driver is allowed to exit their vehicle to check its position during any basic vehicle control skills test exercise. This action is called a "look." During the straight line backing exercise, a driver may not exceed one look. During any other exercise, a driver may not exceed two looks.

If you drive under an overpass during the on-road driving skills test, your examiner may ask you to recall the posted clearance or height of the overpass.

The suspension system holds up a vehicle and its load while keeping the axles in place. Faults in a vehicle's suspension system are extremely dangerous.

It is prohibited for CMV drivers to use hand-held mobile phones while driving.

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.

When checking your vehicle's pedals during a pre-trip inspection, you should ensure that there is nothing under or around the pedals that will obstruct their use. Make sure the pedals are in proper working condition and that the surfaces of the pedals are grooved, if applicable.

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).

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

The most common type of foundation brake is an s-cam drum brake.

After a tire has been changed, the driver should stop a short distance later to recheck the tightness of the tire's lug nuts.

A person may not have more than one license. Violation of this law may be punishable by jail time and/or a fine of up to $5,000.

It is essential that your low pressure warning light functions 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.

If you use the parking brakes when the weather is very wet and the temperature is below freezing, the brakes may become frozen, preventing the vehicle from moving.

Leaks in an exhaust system are extremely dangerous because they may allow toxic fumes into the cab or sleeper berth, endangering drivers and passengers.

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.

Special equipment, such as warning flags or flashing lights, may be required if you are transporting an over-length load. When transporting such a a load, you will need to acquire the necessary permits. Driving is often limited to certain times.

"Axle weight" refers to the weight transmitted to the ground by one axle or one set of axles.

If you can't tell if your vehicle will have room to fit under a bridge or other overhead object, you should slow down and find an alternate route, if possible.

Overloading a vehicle can have negative effects on steering, braking, and speed control. Learn to recognize when cargo is overloaded or poorly balanced.

When inspecting the engine compartment, you should check the oil level, coolant level, and windshield washer fluid level, among other things. In both cold and hot weather, it is important that the engine have enough coolant.

Tractors, trucks, and buses with Anti-Lock Braking Systems (ABS) have yellow malfunction lamps located on their instrument panels. Trailers have yellow ABS malfunction lamps on their left side, either on the front or rear corner.

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

After changing a tire, you should stop a short distance later to recheck the tightness of the tire's lug nuts.

When parking as a part of the stop/start maneuver during the on-road driving skills test, you must apply the parking brake. The gears should be shifted into neutral or park. You must be parked parallel to the curb and should not be blocking any driveways or intersections.

When inspecting your tires, verify that there is at least 4/32 of an inch of tread depth in every major groove on the front tires, and tread depth of at least 2/32 of an inch on the other tires. Tires on the same vehicle should all be the same size.

Drum brakes are attached to the wheels and located on the axles of a vehicle. The braking mechanisms that cause the vehicle to stop can be found inside of a drum brake.

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 a vehicle is carrying hazardous materials that require placarding, there must be identical placards placed on the front, rear, and both sides of the vehicle.

During the vehicle inspection test, you must check the power steering belt, water pump belt, alternator belt, and air compressor belt for snugness, cracks, or frays. If any of these components are not belt-driven, you must tell the examiner which one(s), and verify that they are operating properly, mounted securely, and not damaged or leaking.