Control of Vehicle Flashcards
What is the effect of an incorrectly adjusted driver’s seat?
It can delay the driver from operating a control.
Explanation: Before starting a journey, you should adopt a suitable and comfortable driving position by adjusting the drivers seat to a position where all the vehicle controls can be operated efficiently.
What type of noise might fast cornering create?
Tyre squeal
Explanation: If you drive around a corner too fast, the tyres begin to lose contact with the surface of the road, and this causes a squealing sound. If you continue driving in this way, you can lose control of the vehicle.
What is a likely consequence of sudden braking?
The vehicle could be hit from behind.
Explanation: As well as reading the road ahead, you should also be aware of traffic travelling behind you. This will help you react correctly in a situation where you need to brake suddenly.
If the brake pedal of a vehicle feels soft or spongy when applied, what does this mean?
A fault in the brake fluid system.
Explanation: If the brake pedal feels soft or spongy when pressed, it could indicate that the brake fluid level is low and there is a fault in the system. Each time a driver sets out on a journey, they should test the brakes. If a fault is detected, have it checked by a competent person. Drivers should check brake fluid levels regularly.
Whilst driving, why might a driver suspect that the brake fluid level is their vehicle is low?
The brakes feel spongy and soft
Explanation: If the brake pedal feels soft or spongy when pressed, it could indicate that the brake fluid level is low and there is a fault in the system. Each time a driver sets out on a journey, they should test the brakes. If a fault is detected, have it checked by a competent person. Drivers should check brake fluid levels regularly.
If a driver applies the foot brake and hears a scraping noise, what is the most likely cause?
The brake linings or pads are worn.
Explanation: Drivers should test their brakes regularly and particularly before setting out on a journey. However, if when driving they hear a scraping noise when they press the brake, the most likely reason is that the brake linings or pads are worn. In this case, brakes wont work as well as they should and the driver should have them replaced by a competent person immediately.
What may indicate a problem with the vehicle’s braking system?
The vehicle’s stopping ability is affected.
Explanation: Drivers should test their brakes before setting out on a journey. If when driving they notice that it is taking longer than usual to bring the vehicle to a stop, they should have the brakes checked immediately by a competent person.
What can cause a vehicle to skid?
Excessive heavy braking
Explantion: Heavy braking can cause a vehicle to skid, particularly if the road surface is wet or uneven, or if the tyres are worn or incorrectly inflated. Read the road well ahead and try to avoid heavy braking, particularly in wet or slippery conditions.
Why should a tractor be driven more slowly on uneven road surfaces?
To avoid severe bouncing.
Explanation: Drivers should drive more slowly on an uneven road surface because driving a tractor at speed could cause the vehicle or the trailer to become unstable and difficult to control. During severe bouncing the tractor?s wheels can lose contact with the road, negatively affecting steering and braking.
When should the handbrake be used to bring a vehicle to a halt?
Normally never.
Explantion: In general the handbrake should never be used to bring a vehicle to a halt. This practice is potentially dangerous, as the rear wheels could lock up and the vehicle could skid out of control. In addition, using the handbrake does not operate the rear brake lights to warn following traffic.
What is the danger associated with applying the handbrake (parking brake) when the vehicle is moving?
The wheels could lock and cause the vehicle to skid.
Explanation: Except in an emergency, the handbrake (parking brake) should never be used when the vehicle is moving. This practice is potentially dangerous, as the wheels could lock up and the vehicle could skid out of control. In addition there is no warning to following traffic from the brake lights.
The parking brake (hand brake) generally works on which wheels?
The rear wheels.
Explanation: In most vehicles, the parking brake operates on the rear wheels only. The function of the parking brake (handbrake) is to stop the vehicle from moving when it is parked or when it is stopped on a hill. Drivers normally use the parking brake when the vehicle is already stationary and should generally not use it to stop the vehicle. It is even more important to use the parking brake when parked on a hill or when stationary in a vehicle with automatic transmission to prevent creep.
What is the recommended method of driving a car with automatic transmission?
Operate the accelerator and brake with the right foot.
Explanation: When driving a car with automatic transmission, drivers should use the right foot to operate both the accelerator and the brake, just as in vehicles with a manual gear box. In general it is important to avoid using the accelerator and the brake at the same time.
