At a ford, the road passes through a stream at a place where the water is normally shallow. When you've gone through the water, you should test your brakes and if necessary dry them out. To do this, first check that you won't cause danger to traffic behind. Then apply a light brake pressure while moving slowly. Make sure your brakes are working properly before resuming normal driving.

Anyone who accompanies a learner driver on a driving test must be at least 16 years old and must wear a seat belt. (This includes a person who holds a seat-belt exemption certificate.) The accompanying driver mustn't take any part in the test. The examiner can end the test if they feel any inappropriate communication has taken place.

When parking at night, park in the direction of the traffic flow. This will enable other road users to see the reflectors on the rear of your vehicle. You must also use parking lights where the speed limit is more than 30 mph.

A candidate should tell DVSA of any special needs or circumstances when they book their driving test. No matter how serious the disability might be, the candidate will still take the same driving test as any other person. However, more time is allowed for the examiner to discuss the candidate's needs and talk about any adaptations fitted to the vehicle.

If you're involved in a collision that causes damage or injury to any other person, vehicle, animal or property, by law you must stop. Give your name, the vehicle owner's name and address, and the vehicle's registration number to anyone who has reasonable grounds for requiring them.

If you're involved in a collision that causes damage or injury to any other person, vehicle, animal or property, you must stop and exchange details with anyone having reasonable grounds for requiring them. If you don't give your details at the time, report the incident to the police as soon as is reasonably practicable and in any case within 24 hours.

If you aren't sure of the speed limit, a good indication is the presence of street lights. If there's street lighting, the speed limit will usually be 30 mph unless otherwise indicated.

When parking, all ancillary controls should be switched off and the engine stopped. Make sure that the handbrake is applied firmly before leaving the vehicle.

Drivers must be able to read a modern vehicle number plate from a distance of 20 metres. If you need glasses to do this, then you must wear them at all times when you're driving.

Bright fog lights can dazzle other drivers, so you must remember to turn them off when the fog lifts and visibility improves. Be prepared for patchy fog: you may need to turn the fog lights on again.

It's illegal to use a hand-held mobile phone while driving. Using a hands-free system doesn't mean that you can hold a conversation and drive safely at the same time; it will still distract your attention from the road. Act responsibly and wait until you've parked before using your mobile phone.

Vehicles that require an MOT certificate mustn't be driven on the road after the certificate has expired. Exceptionally, the vehicle may be driven to and from a pre-arranged MOT test appointment or to a garage for repairs required for the test.

A person who's colour-blind will have to take exactly the same practical driving test as any other candidate. No restriction will be placed on their driving licence when they pass their test.

High-intensity rear fog lights are far brighter than normal rear lights. When visibility is reduced to 100 metres (328 feet) or less, they should be used to help drivers behind to see your vehicle. When visibility improves, these high-intensity lights should be switched off to avoid dazzling drivers behind.

Double white lines along the centre of the road are usually found in places where there's a poor view ahead, usually caused by bends in the road. When the line nearest to you is solid, you may cross it to pass a stationary vehicle, providing that it's safe to do so.

Your safety and that of others may depend on the condition of your tyres. You must check that they're correctly inflated and have sufficient tread depth. The legal minimum tread depth for cars is 1.6 mm. This depth should be across the central three-quarters of the breadth of the tyre and around the entire circumference.

The driver must ensure that all passengers under 14 years of age wear a seat belt or sit in an approved child restraint. A child under 3 years of age, who's travelling in the front seat of a car, must use an approved child restraint.

Photocard licences are valid for a maximum of 10 years. This is to allow the photographic likeness to be updated when the licence is renewed. However, the licence entitlement usually lasts until age 70.

Don't park less than 10 metres (32 feet) from a junction (unless in an authorised parking place). At night, park in the direction of the traffic, so that your car's red reflectors show to passing drivers. You must use your parking lights when parking at night on a road, or in a lay-by on a road, where the speed limit is over 30 mph.

It's the driver's legal responsibility to ensure that all passengers under 14 years old wear a seat belt, or are fastened in an approved child restraint. However, it's good practice to ensure that all other passengers wear seat belts as well.