This sign is used to warn of overhead electrified cables and is usually accompanied by a plate indicating the safe height limit.

At a crash scene you can help in practical ways, even if you aren't trained in first aid. Call the emergency services and make sure you don't put yourself or anyone else in danger. The safest way to warn other traffic is by switching on your hazard warning lights.

Always check the road signs. Triangular signs are warning signs: they inform you about hazards ahead and help you to anticipate any problems. There are a number of different signs showing pedestrians. Learn the meaning of each one.

If you need glasses to bring your eyesight up to the legal standard for driving or riding, you must wear them whenever you ride. Don't be tempted to ride if you've lost or forgotten your glasses; you'll endanger yourself and other road users, and you'll be breaking the law.

The hours of operation of Red Routes vary from one area to another. As a rule, you mustn't stop on a Red Route, but there may be special marked boxes where loading and unloading can be carried out at certain times. Look out for signs giving information about the restrictions in place.

When you're turning into a side road, pedestrians who are crossing have priority. You should wait to allow them to finish crossing safely. Be patient if they're slow or unsteady. Don't try to rush them by sounding your horn, flashing your lights, revving your engine or giving any other inappropriate signal.

Signs with blue circles mostly give a positive instruction. These are often found in urban areas and include signs for mini-roundabouts and directional arrows.

In windy weather, watch out for motorcyclists and also cyclists, as they can be blown sideways into your path. When you pass them, leave plenty of room and check their position in your mirror before pulling back in.

As you would with any pedestrian, you should prepare to stop. Don't wave the person across, as other traffic may not slow down.

Police officers may need to direct traffic; for example, at a junction where the traffic lights have broken down. Check your copy of The Highway Code for the signals that they use.

Cornering with the side stand down could lead to a serious crash. Many motorcycles have a device that stops the engine if you try to ride off with the side stand down, but don't rely on this.

If a tyre bursts, close the throttle smoothly and slow gently to a stop, holding the handlebars firmly to help you keep a straight course.

The hard shoulder should only be used in a genuine emergency. If possible, and if it's safe, use a roadside telephone to call for help. This will give your exact location to the operator. Never cross the carriageway or a slip road to use a telephone on the other side of the road.

Pillion passengers must sit astride the motorcycle, on a proper passenger seat, and passenger footrests must be fitted. They must also wear a correctly fastened motorcycle helmet.

When you leave the motorway, make sure that you check your speedometer. You may be going faster than you realise. Slow down and look for speed-limit signs.

An amber flashing light on a vehicle indicates that it's slow-moving. Battery-powered vehicles used by disabled people are limited to 8 mph. It isn't advisable for them to be used on dual carriageways where the speed limit exceeds 50 mph. If they are, then an amber flashing light must be used.

Traffic-calming measures such as road humps, chicanes and narrowings are intended to slow drivers down to protect vulnerable road users. Don't speed up until you reach the end of the traffic-calmed zone.

Road markings will warn you of a hazard ahead. A single broken line along the centre of the road, with long markings and short gaps, is a hazard warning line. Don't cross it unless you can see that the road is clear well ahead.

Older people may have impaired hearing, vision, concentration and judgement. They may also walk slowly and so could take a long time to cross the road.

The handling of your motorcycle will be greatly affected by the road surface. Look well ahead and be especially alert if the road looks uneven or has loose chippings. Slow down in good time, as braking harshly in these conditions will cause you to skid. For the same reason, avoid making sudden changes of direction.

Along the hard shoulder there are marker posts at 100-metre intervals. These will direct you to the nearest emergency telephone.

Some road surfaces can affect the stability of a motorcycle far more than they affect other vehicles. Look out for loose or slippery road surfaces and be aware of any traffic around you. You may need to take avoiding action and change direction quickly.

Trams may run on roads used by other vehicles and pedestrians. The section of road used by trams is known as the reserved area and should be kept clear. It usually has a different surface, edged with white lane markings.

Take care if you're carrying a heavy load on your motorcycle. Try to carry the weight as low down as possible - ideally in panniers, with the weight evenly spread on each side. You may need to adjust your tyre pressures, your headlight aim and your rear shock-absorber preload setting.

Signal your intention and build up sufficient speed on the hard shoulder so that you can filter into a safe gap in the traffic. Don't push your way in, causing other traffic to alter speed or direction.

This is a 'level crossing without barrier or gate ahead' sign. Trains may be passing here but there will be no gates or barriers at the level crossing.

When you pass your test on a motorcycle between 120 cc and 125 cc, you'll be issued with a full light motorcycle licence of category A1. You'll then be allowed to ride any motorcycle up to 125 cc and with a power output not exceeding 11 kW (14.6 bhp).

You must obey signals to stop given by police and traffic officers, traffic wardens and school crossing patrols. Failure to do so is an offence and could lead to prosecution.

When the area is safe and there’s no danger from other traffic or fire it’s better not to move casualties. Moving them may cause further injury.

When a smart motorway is operating, you must follow the mandatory signs on the gantries above each lane, including the hard shoulder. Variable speed limits help keep the traffic moving and also help to prevent bunching.