Knowledge Test Class A
This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has three possible answer choices. Test questions come from the New Mexico Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination, Doubles and Hazardous Materials. Endorsements that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.
Number of Question
1. Mirrors should be used:
When driving, you should frequently check the mirrors on both sides of your vehicle.
2. Too much air pressure in a tire:
Tires should never have too much air pressure. Be sure to check your tires' air pressure with a gauge during inspections.
3. Emergency brakes:
All trucks, truck tractors, and buses must be equipped with emergency brakes and parking brakes.
4. Dry bulk tanks:
Dry bulk tanks require special care to be driven, both because they have high centers of gravity and because the weight of the load can shift in transit.
5. If the low air pressure warning signal comes on, you should:
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.
6. If you are braking on dry pavement while traveling at 55 mph, how much distance will brake lag add to your overall stopping distance?
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 the vehicle's total stopping distance.
7. How do ice cream trucks become hazardous to other drivers?