Basic Control of Your Vehicle
What this domain tests
Basic Control covers putting a commercial vehicle in motion, steering it through turns, stopping smoothly, and backing without hitting anything. The exam tests whether you understand that a heavy vehicle does not handle like a car: it turns around a pivot point, its rear wheels off-track, and its stopping distance grows with speed and weight.
Starting and stopping
Start in the proper gear, release the parking brake only when you are ready to move, and check that the area is clear. Accelerate smoothly; a heavy vehicle does not need full throttle. Brake early and progressively. Do not fan the brake pedal or ride the brakes on a long downgrade. When you stop, set the parking brake, place the transmission in the correct gear, and chock the wheels if the situation requires it.
Steering and turning
A vehicle turns around a pivot point, usually near the rear axle. The rear wheels follow a shorter path than the front wheels, so they can cut over a curb or strike a pedestrian if you turn too tightly. Watch the rear in your mirrors and use a pull-up when space is tight. Do not turn so wide that you cross into oncoming traffic, and do not turn so tight that the trailer or rear body hits a fixed object.
Backing
Back slowly, no faster than a walk. Use both mirrors, and use a helper whenever one is available; keep the helper in view. If you lose sight of the helper, stop. Back toward the driver’s side when you have a choice, because that side is easier to see. For a straight truck, turn the wheel in the direction you want the rear of the vehicle to go. If you are unsure, get out and look.
Worked example
You must back a 40-foot straight truck into a loading dock on your right. The dock is between two parked trailers, and your right mirror is partially blocked. The correct reasoning is to stop, get out and look at the clearance, then use a spotter. You back slowly, watching the spotter and the left mirror, and you stop immediately when the spotter steps out of view. You do not “trust the mirrors” when a blind area remains. The extra minute is the control decision.
Traps that cost marks
Relying on mirrors alone is a common error; mirrors leave blind spots. Another is oversteering while backing, which swings the front end into trouble. Do not leave the driver’s seat without setting the parking brake and securing the vehicle. Finally, a tight turn is not a test of skill; a pull-up is the professional move.