Alabama CDL Knowledge Test Class B: Practice Test

If you are convicted of any kind of traffic violation, in any type of vehicle, you must notify your employer within 30 days. You must also inform your motor vehicle licensing agency of the violation within 30 days if the conviction happened in another jurisdiction. This rule does not apply to parking infractions.

You should be cautious when passing parked vehicles. A person may step out of a parked vehicle or out from between parked vehicles without looking for oncoming traffic. A driver may begin moving their vehicle before realizing you are there.

You should cover your cargo to protect people from the cargo if it spills, as well as to protect the cargo from the weather.

During the on-road driving test, the examiner will be score you on specific driving maneuvers as well as on your general driving behavior. You must drive in a safe and responsible manner; obey all traffic signs, signals, and laws; and not cause an accident or commit a moving violation.

Regrooved, recapped, or retreaded tires are not permitted to be used on the front of a bus.

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

A vehicle that is equipped with air brakes must also be equipped with a supply pressure gauge. This gauge tells the driver how much air pressure is in each of the vehicle's air tanks.

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.

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