Florida CDL DMV Knowledge Test Class B 1

An air compressor governor will stop the compressor from pumping air once the air tanks are at an air pressure level of 125 psi. This air pressure level is referred to as the "cut-out" level.

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.

Maneuvers that may be included in the basic vehicle control skills test include straight line backing, offset back/right parking, offset back/left parking, driver side parallel parking, conventional parallel parking, and alley docking.

At times when visibility is low, you should turn your headlights on to the low beam setting. If you are having a difficult time seeing others, they are probably having a difficult time seeing you.

Smoking, eating, or drinking are distracting activities and should be avoided while you are driving. Instead, plan ahead and allow yourself time to stop to eat when making a lengthy trip.

If your vehicle "pulls" to one side when braking, you may have brake trouble. If there is an issue with your brakes, you should fix the issue before driving. Operating an unsafe vehicle is against federal and state laws.

In heavy traffic, it is safest to match the speed of surrounding vehicles. Vehicles traveling in the same direction at the same speed are unlikely to collide. However, you should not exceed legal speed limits.

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. You should be very careful when temperatures are below freezing and the road looks wet.

When performing a static leakage test on a single vehicle with air brakes, the leakage rate should be no more than 2 psi in a minute. If air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.

On a steep downgrade, you must use the engine's braking effect as your primary method of speed control. Be sure to decelerate and downshift appropriately before beginning to drive down the hill. Relying too heavily on the brakes may cause them to overheat and fade, becoming less effective.

Hanging meat can be an unstable load in a vehicle. The truck may become top-heavy and steering may be inhibited by the swinging meat. Drivers carrying such loads should use particular caution when traveling around sharp curves, such as highway entrance and exit ramps.

If you stay in neutral for too long while double clutching and have difficulty switching your vehicle into the next gear, don't force it. Return to neutral, release the clutch, increase the engine speed to match road speed, and try again.

Cargo and its securing devices must be inspected before starting a trip. After beginning a trip, the driver should check the load and securing devices within the first 50 miles on the road, every three hours or 150 miles traveled, and after every break.

If a pre-trip inspection reveals a load to be oversize, the driver must confirm that all required signs, flags, lamps, and reflectors are safely and properly mounted, and that and all required permits are in their possession.

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.

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

There are a number of crimes that will disqualify a person from receiving a hazardous materials endorsement for seven years. Among these offenses are arson, robbery, and crimes of dishonesty, fraud, or misrepresentation. More serious crimes, such as murder, result in a lifetime disqualification.

In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.

In an air brake system, the air storage tanks must be drained to remove accumulated water and compressor oil. Failing to do this can cause damage. For example, water that has built up in the system could freeze in cold weather and cause brake failure.

An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.

Brakes heat up with use. If they are overused and become too hot, expansion and chemical changes will make them less effective and eventually cause them to stop working altogether. This is known as "brake fade."

A tire load rating is the maximum safe weight that can be carried by a tire at a specified pressure. This number is stated on the side of each tire.

The height of a vehicle's center of gravity is very important. A high center of gravity (cargo piled up high or heavy cargo on the top of a load) increases the possibility of your vehicle tipping over.

Gross Vehicle Weight (GVW) is the total weight of a single vehicle and its load of cargo.

When turning quickly to avoid an object, turn only as much as is necessary to clear it. Do not apply the brakes while turning.

If you are unsure if a trailer is equipped with an Anti-Lock Braking System (ABS), look under the vehicle for the electronic control unit and wheel speed sensor wires coming from the back of the brakes.

When approaching a curve during the on-road driving test, you should thoroughly check traffic in all directions. Before entering the curve, reduce your speed sufficiently so that further braking or shifting is not required. Keep your vehicle in its lane and continue checking traffic in all directions.

Because they are exposed to less sunlight, shaded patches of road will stay cooler longer than other areas of the road. Due to the lack of direct sunlight, shady areas can remain icy and slippery after ice on other areas of the road has melted.

If you must stop and park on the side of the road, make sure to turn on your emergency flashers. This is especially important at night. Taillights are not an adequate when alerting other drivers because the drivers may mistakenly think your vehicle is moving normally and collide with it.

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.

During the external inspection portion of the pre-trip vehicle inspection test, you must verify that the steering box is securely mounted and not leaking.

During the vehicle inspection skills test, you will need to explain to the examiner what you are inspecting and why.

When examining your tires during the vehicle inspection test, you should ensure that treads are evenly worn.

Check your tires regularly when looking in your mirrors. This helps ensure that you will notice a tire fire, if one should happen. Tire fires may occur when a tire is under-inflated, if dual tires are touching, or if the tires are otherwise overheated.

To make a normal stop in a vehicle with air brakes, push the brake pedal down. The harder the pedal is pressed, the more air pressure is released.