When a physically disabled driver passes their driving test in a specially adapted vehicle, the licence issued will include restrictions. These will require the necessary modifications to be fitted to any vehicle they drive.

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.

One condition of holding a driving licence is that you must inform the Driver and Vehicle Licensing Agency (DVLA), or the Driver and Vehicle Agency (DVA) in Northern Ireland, if your health deteriorates in any way that affects your ability to drive. This also applies if your eyesight deteriorates to the point that you can no longer meet the driver's eyesight requirements.

Potential driving instructors (PDIs) will have their eyesight tested at the start of their Part 2 examination. A number plate, where the letters and figures are 79 mm tall and 50 mm wide, must be read at a minimum distance of 26.5 metres (87 feet). If a PDI can't pass this test, their Part 2 examination will go no further. This won't, however, affect their licence to drive, as the ADI eyesight test standard exceeds the legal eyesight requirement.

You mustn't sound your vehicle's horn in a built-up area while stationary on the road, or between the hours of 11.30 pm and 7.00 am. The exception is if another road user poses a danger.

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.

Fog lights should only be used when visibility is seriously reduced. They must be switched off when visibility improves, to avoid dazzling other road users.

It's illegal to use a mobile phone while you're driving (except for genuine emergencies). Driving requires your total attention and concentration at all times. Using a mobile phone will distract you and increase your chances of having a collision. Even using a hands-free system will distract you. Be safe: switch off your phone before you start driving and pick up any messages when you stop for a break.

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 successful candidate with vision in only one eye will be given an unrestricted pass certificate. As with all drivers, the licensing authority (DVLA) must be notified of any medical conditions when applying for a licence, and when those conditions develop or change.

For the purposes of driving a motor car, deafness isn't classed as a disability. Having passed their test, deaf drivers won't have their licence restricted.

A person with only one eye isn't considered to have a disability for the purpose of driving and will be issued with an unrestricted driving licence.

A 16 year old may drive a car if they're in receipt of the enhanced rate of the mobility component of Personal Independence Payment. However, if the enhanced rate is withdrawn, the normal minimum age for driving a car (17 years old) will then apply.

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.

Don't park within 10 metres (32 feet) of a junction (unless in an authorised parking place). This is to allow drivers emerging from, or turning into, the junction a clear view of the road they're joining. It also allows them to see hazards such as pedestrians or cyclists at the junction.

Red rear reflectors show up when headlights shine on them. These are useful when you're parked at night but will only reflect if you park in the same direction as the traffic flow. Normally you should park on the left, but if you're in a one-way street you may also park on the right-hand side.

All vehicles must display parking lights when parked on a road with a speed limit greater than 30 mph. Park in the direction of the traffic flow so that your parked vehicle isn't mistaken for a moving vehicle.

If your pupil's driving is below the required test standard, it's your responsibility as a professional instructor to advise them not to take the test. As soon as you become aware of a possible problem, you should discuss this with your pupil and positively encourage them that, in their interest, and for other road users as well, it would be far better to postpone the appointment. If you can't dissuade them, then you should withhold the use of your vehicle. Ultimately, it's the pupil's test and an instructor can't prevent them from taking it in someone else's vehicle.