Arkansas CDL DMV Knowledge Test Class A 1

The person driving a vehicle is responsible for its safe operation. Be sure to perform routine vehicle inspections before operating a commercial motor vehicle.

It is essential that you are aware of what is happening on all sides of your vehicle at all times. Scan the road ahead and make regular checks of the mirrors on both sides of your vehicle while you are driving.

When backing with a trailer, you should pull up to reposition your vehicle as needed.

Driving at night is more dangerous than driving during the day. It is more difficult for drivers to see hazards, the glare of headlights can affect drivers' vision, and there are more fatigued and impaired drivers on the road.

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.

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

Be careful around pedestrians, joggers, and cyclists who are wearing headphones. They may be unable to hear your vehicle approaching and may do dangerous things because they do not know you are there.

You should be cautious when you are near people who are not paying attention to the road. Drivers and pedestrians who are talking to someone may be distracted by the conversation and not fully paying attention to the road. Workers on or near the road may not be paying attention to traffic because they are focused on their work, and can themselves also be a distraction to drivers.

When doing a pre-trip inspection on a vehicle with power steering, be sure to check the hoses, pumps, and fluid level. In particular, you should check the hoses for leaks.

An operator should drive with care when transporting a cargo of hanging meat. Such a load is unstable, both because it has a high center of gravity and because the swinging of the meat can affect the driver's handling of the vehicle.

The purpose of an Anti-Lock Braking System (ABS) is to prevent a vehicle's wheels from locking up when the driver brakes hard on a slippery surface.

Factors that can affect your vehicle's stopping distance include driving speed, the vehicle's weight, and the slipperiness of the road surface.

Without a working Anti-Lock Braking System (ABS), your vehicle will still have normal brake function. Continue to drive and brake as you normally would and have your ABS serviced as soon as possible.

The total stopping distance for vehicles equipped with air brakes is made up of four factors: perception distance, reaction distance, brake lag distance, and braking distance. When braking at a speed of 55 mph while driving on dry pavement, the brake lag can add around 32 feet to a vehicle's total stopping distance.

Because air takes time to flow through the air lines to the brakes, air brakes cannot begin working instantly. There is often a brake lag of at least one-half of a second between the moment the brake pedal is pressed and the moment the brakes begin to work.

A wig wag is a type of low air pressure warning device in an air brake system. It drops a mechanical arm into the driver's view when the air pressure in the tanks falls below 60 psi.

Air brakes are really three different braking systems: the service brake, the parking brake, and the emergency brake. Emergency and parking brakes are applied with mechanical force.

Over-length, over-width, and/or overweight loads may require special permits from the Department of Transportation.

If you are not confident that your vehicle will have enough room to safely pass under an overhead object, you should slow down and seek another route, if possible.

You must drive in a safe and responsible manner during the on-road driving test. This includes wearing your safety belt; obeying all traffic signs, signals, and laws; and completing the test without an accident or moving violation.

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.

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.

To avoid hitting someone or something behind you, it is important to ensure that your vehicle does not roll backwards when starting from a stop. If your vehicle has a manual transmission, partly engage the clutch before taking your foot off the brake.

Hold the steering wheel firmly with both hands, placing them on opposite sides of the wheel.

When inspecting your brakes, you should check for cracked drums; shoes or pads covered in oil, grease, or brake fluid; and shoes that are missing, broken, or worn dangerously thin.

If a vehicle is coming toward you while using its high beam headlights, glance away from the headlights and toward the right side of the road until the vehicle has passed. This will keep you from being blinded by the lights.

Tires need to have at least 4/32 of an inch of tread depth in every major groove on the front tires, and at least 2/32 of an inch of tread depth on other tires.

While driving, spring brakes are generally held in place by air pressure. If the air pressure gets low enough, the springs will activate the brakes.

If possible, you should avoid all cell phone distractions by turning it off before starting a trip and leaving it off until you reach your destination.

If you are asked to complete an offset back/right parking maneuver, you should first pull straight forward, then back up to the right. Your vehicle must be parked completely within the boundaries of the parking space.

During a trip, you should regularly check the gauge and instrument panels, mirrors, tires, cargo, and lights for signs of trouble.

If you must stop on the side of the road, it is important that you turn on your emergency flashers as a warning to other drivers. This is especially important if you are stopped at night.

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.

If a tractor-trailer is so equipped, the trailer brake hand valve can be used to stop the vehicle from rolling back when being started from a stop.

Skids caused by acceleration frequently occur on slippery road surfaces. These skids can generally be resolved by the driver removing their foot from the accelerator.