Loads that are over-length, over-width, or overweight require special permits and may be subject to restrictions, such as being allowed on the road only at certain times of the day.

It is important to know the maximum air loss rate that is safe for your specific vehicle. A single vehicle with air brakes should have a leakage rate no higher than 3 psi in a minute during an applied leakage test.

Maximum axle weights are often set by a bridge formula, which sets a lower maximum weight for axles that are close together.

Diamond-shaped warning labels are required to be secured to packages containing most hazardous materials.

When approaching a railroad crossing while driving a bus, you must stop between 15 and 50 feet from the nearest track to look and listen for any approaching trains. Only proceed once you are certain that there are no approaching trains. You do not need to stop at streetcar crossings; if a police officer or flagger is directing traffic; if there is a green traffic signal at the crossing; or at crossings marked "exempt" or "abandoned."

The weight of cargo in a vehicle should be distributed as low as possible. Having a center of gravity that is too high will increase the risk of a rollover.

Driving with dry bulk tanks requires special care because they usually have high centers of gravity. It is also important for drivers to be prepared for the contents to shift in transit.

A bus should not be refueled while passengers are on board unless it is absolutely necessary. In particular, a bus with passengers on board should never be refueled inside an enclosed building.

A bus driver should not allow passengers to bring common hazards, such as gasoline or car batteries, onto their bus.

At bus stops, drivers should warn passengers about potential hazards. This may include warning them to watch their step when exiting the bus by way of lowered stairways.

When approaching a curve during the on-road driving skills test, you must reduce your speed sufficiently before entering the curve so that you do not need to further brake or shift in the curve. Keep the vehicle in its lane and continue to check for traffic in all directions.

Check each slack adjuster after setting wheel chocks and disengaging the parking brake. Pull the slack adjusters to make sure they do not move more than about one inch from where the push rod is attached. If they move more than one inch, they may be out of adjustment and will need to be fixed.

The aisles and stairwells of a bus should always be kept clear. Luggage and freight must be placed in a location that allows passengers to exit through any window or door in the event of an emergency.

If you are asked to alley dock, you should first pull past the alley and stop your vehicle in a position that is parallel to the outer boundary. From there, you should back your vehicle entirely into the alley parking area. Your vehicle should be parked in a straight position within the boundaries of the parking space.

On flatbed trailers and trailers without sides, cargo must be tied down. There should be at least one tie-down for every 10 feet of cargo. Regardless of the size of the cargo, at least two tie-downs must be used.

When inspecting the interior of a bus, you must make sure everything is safe and in proper working condition. Take the time to ensure that each handhold and railing is securely in place and safe to be used.

If the low air pressure warning signal comes on while you are driving a vehicle with air brakes, you should immediately bring the vehicle to a safe stop while you are still able to control the brakes. Inspect and repair the brakes as soon as possible.

If brakes are overused, they can become too hot. This overheating causes them to fade, making them less effective at slowing the vehicle.

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.

If you are asked to alley dock, you should first pull past the alley and stop your vehicle in a position that is parallel to the outer boundary. From there, you should back your vehicle entirely into the alley parking area. Your vehicle should be parked in a straight position within the boundaries of the parking space.