This sign gives you advance warning of a junction where the permanent sign is obscured by roadworks.

Engines that burn fossil fuels produce exhaust emissions that are harmful to health. The harder you make the engine work, the more emissions it will produce. Engines also use more fuel and produce higher levels of emissions when they're cold. Anything you can do to reduce your use of fossil fuels will help the environment.

On smart motorways, the hard shoulder can be used as a running lane when a speed limit is shown above it. However, a red cross above the hard shoulder means that this lane shouldn't be used, except for emergencies and breakdowns.

If possible, avoid the early morning, late afternoon and early evening 'rush hour'. Doing this should allow you to travel in a more relaxed frame of mind, concentrate solely on what you're doing and arrive at your destination feeling less stressed.

You mustn't stop on the hard shoulder, except in an emergency. Never use the hard shoulder to have a rest or a picnic, answer a mobile phone or check a road map. Also, you mustn't travel back along the hard shoulder if you've gone past your exit.

On narrow sections of road, horse riders may ride in the centre of the lane. This is for their own safety as it makes them more visible. You should be patient and only pass when it's safe to do so.

Parking restrictions apply in a variety of places and situations. Make sure you know the rules and understand where and when restrictions apply. Controlled parking areas will be indicated by signs and road markings. Parking in the wrong place could cause an obstruction and danger to other traffic. It can also result in a fine

To obtain the full category 'A' on your driving licence, the motorcycle you use for your practical test must be a solo machine with a cylinder capacity of at least 595 cc and a power output of at least 40 kW (53.6 bhp).

The narrow wheels of a bicycle can become stuck in the tram rails, causing the cyclist to stop suddenly, wobble or even lose balance altogether. The tram lines are also slippery, which could cause a cyclist to slide or fall off.

When you see this sign, beware of traffic queues ahead. Check your mirrors and reduce your speed. Research shows that you make poor decisions when you're angry, so you're less likely to spot and respond safely to hazards. Be patient when you're delayed and reduce the possibility of being involved in an incident.

This traffic sign means no stopping on the main carriageway at any time, not even to set down passengers. However, you may stop in a lay-by.

In order to keep roads free from parked cars, there are some areas where you're allowed to park on the verge. Only do this where you see the sign. Parking on verges or footways anywhere else could lead to a fine.

There are times when road markings are obscured by queuing traffic, or you're unsure which lane to use. If, at the last moment, you find you're in the wrong lane, don't cut across or bully other drivers to let you in. Follow the lane you're in and find somewhere safe to turn around and rejoin your route.

If you're following a cyclist who's signalling to turn right at a roundabout, leave plenty of room. Give them space and time to get into the correct lane.

This sign indicates that vehicles transporting explosives are prohibited from travel along the roadway behind it.

Where a motorway has a steep uphill gradient, slow-moving, large vehicles might get in the way of other traffic. An extra lane on the left may be provided for these slow-moving vehicles. It allows faster-moving traffic to flow more easily.

You must stop if you've been involved in a collision which results in injury or damage. The police may ask to see your driving licence and insurance details at the time or later at a police station.

Tyres are a major factor in the handling, stability and stopping distance of a motorcycle. Make sure they're in a safe and legal condition. The weather and road surface also play a part. Always anticipate well ahead and take account of the conditions when you're braking.

This crucial road sign warns drivers about upcoming traffic flow in both directions.

A SORN allows you to keep a vehicle off-road and untaxed. SORN will end when the vehicle is taxed, sold or scrapped.

Young and inexperienced motorcyclists are far more likely to be involved in incidents than more experienced riders. The reasons for this include natural exuberance, showing off, competitive behaviour and overconfidence. Don't overestimate your abilities and never ride too fast for the conditions.

Horse riders often keep to the outside of the roundabout even if they're turning right. Give them plenty of room and remember that they may have to cross lanes of traffic.

'Tailgating' is the term used when a driver or rider follows the vehicle in front too closely. It's dangerous because it restricts their view of the road ahead and leaves no safety margin if the vehicle in front needs to slow down or stop suddenly. Tailgating is often the underlying cause of rear-end collisions or multiple pile-ups.

Toucan crossings are similar to pelican crossings but there's no flashing amber phase. Cyclists share the crossing with pedestrians and are allowed to cycle across when the green cycle symbol is shown.

You'll need to adapt your riding technique when riding a motorcycle fitted with a sidecar. The extra weight will affect the handling and may increase your overall stopping distance.

You must produce a valid insurance certificate when requested by a police officer. If you can't do this immediately, you may be asked to take it to a police station. Other documents you may be asked to produce are your driving licence and the vehicle's MOT certificate.

A red cross above the hard shoulder shows that it's closed as a running lane and should only be used for emergencies or breakdowns. On a smart motorway, the hard shoulder may be used as a running lane at busy times.

Your horn mustn't be used between 11.30 pm and 7 am in a built-up area or when you're stationary, unless a moving vehicle poses a danger. Its function is to alert other road users to your presence.

Puffin crossings have sensors that detect when pedestrians are using the crossing. The sensors control the timing of the traffic lights, and this means that there's no flashing amber phase as there is with a pelican crossing.

At a pelican crossing, the green light means you may proceed as long as the crossing is clear. If someone hasn't finished crossing, be patient and wait until the road is clear.

A long vehicle may have to straddle lanes either on or approaching a roundabout so that the rear wheels don't hit the kerb. If you're following a long vehicle, stay well back and give it plenty of room.

Stopping where you see this sign is likely to cause an obstruction, which could lead to traffic delays. Obeying the sign will help keep the traffic flowing.

The effects of shock may not be immediately obvious. Warning signs are rapid pulse, sweating, pale grey skin and rapid shallow breathing.

Avoid blocking tram routes. Trams are fixed on their route and can't manoeuvre around other vehicles or pedestrians. Modern trams travel quickly and are quiet, so you might not hear them approaching.

Motorcycles and scooters are generally smaller than other vehicles and can be difficult to see. Wearing bright clothing makes it easier for other road users to see a motorcyclist approaching, especially at junctions.

The motorcyclist is in an extremely vulnerable position, exposed to further danger from traffic. Approaching vehicles need advance warning in order to slow down and safely take avoiding action or stop. Don't put yourself or anyone else at risk. Use the hazard warning lights on your vehicle to alert other road users to the danger.

When you leave your motorcycle parked and unattended on a road, switch off the engine, use the steering lock and remove the ignition key. Also take any tank bags, panniers or loose luggage with you, set the alarm if the motorcycle has one, and use an additional lock and chain, or cable lock.

Look at the picture carefully and try to imagine you're there. The cyclist in this picture appears to be trying to cross the road. You must be able to deal with the unexpected, especially when you're approaching a hazardous junction. Look well ahead to give yourself time to deal with any hazards.

Oil and rubber can build up on the road during long spells of dry weather. When it rains, this can make the road surface very slippery.

Congestion can be reduced by keeping traffic at a constant speed. At busy times, maximum speed limits are displayed on overhead gantries. These can be varied quickly, depending on the amount of traffic. By keeping to a constant speed on busy sections of motorway, overall journey times are normally improved.

Drivers and riders may switch on their hazard warning lights to warn following traffic of an obstruction or danger ahead. This only applies on motorways and dual carriageways that are subject to the national speed limit. The hazard warning lights should be turned off again when it's clear the warning has been seen.

Smart motorways are intended to reduce congestion and make journey times more reliable. In these areas, the hard shoulder may be used as a running lane to ease congestion at peak times or when an incident occurs. The variable speed limits shown in red circles are mandatory and help to keep traffic flowing at a steady speed.

When you ride with a pillion passenger, your motorcycle may feel unbalanced and its acceleration and braking distance may also be affected. Make sure your passenger knows they must lean with you while cornering. If they don't, they could cause the motorcycle to become unstable and difficult to control.

You must use parking lights when parking at night on a road or in a lay-by on a road with a speed limit greater than 30 mph. You must also park in the direction of the traffic flow and not close to a junction.

Using the controls smoothly can reduce fuel consumption by about 15%, as well as reducing wear and tear on your vehicle. Plan ahead and anticipate changes of speed well in advance. This will reduce the need to accelerate rapidly or brake sharply.

The purpose of a CBT course is to teach you basic theory and practical skills before you ride on the road, on your own, for the first time. CBT courses can only be given by approved training bodies (ATBs).

Red studs are placed between the edge of the carriageway and the hard shoulder. Where slip roads leave or join the motorway, the studs are green.

When you tow a trailer, remember that you must obey the reduced speed limits of 50 mph on a single carriageway and 60 mph on a dual carriageway or motorway. Make sure that the trailer is hitched correctly and that any load in the trailer is secure. You should also bear in mind that your stopping distance may increase.

When it's foggy, use dipped headlights. This will help you see and be seen by other road users. If visibility is seriously reduced, consider using front and rear fog lights if you have them. Keep to a sensible speed and don't follow the vehicle in front too closely. If the road is wet and slippery, you'll need to allow twice the normal stopping distance.

The colours of the reflective studs on the motorway and their locations are

• red - between the hard shoulder and the carriageway
• white - between lanes
• amber - between the carriageway and the central reservation
• green - along slip-road exits and entrances
• bright green/yellow - at roadworks and contraflow systems

Animals are easily frightened by moving motor vehicles. If you're approaching horses, keep your speed down and watch to see if the rider has any difficulty keeping control. Always be ready to stop if necessary. When it's safe to pass, give them plenty of room.

Red flashing lights above all lanes mean you must stop and wait. You'll also see a red cross lit up. Don't change lanes, don't continue and don't pull onto the hard shoulder (unless in an emergency).

You mustn't use hazard warning lights while moving, except to warn traffic behind when you slow suddenly on a motorway or unrestricted dual carriageway. Never use hazard warning lights to excuse dangerous or illegal parking.

Any load will affect the handling of your motorcycle by changing its centre of gravity. When using panniers, spread the weight evenly on each side. Avoid carrying heavy items in a top box, as this could make your steering dangerously light.

Obey the 'give way' signs. Trams are unable to steer around you if you misjudge when it's safe to enter the junction.

Red studs are placed between the edge of the carriageway and the hard shoulder. Where slip roads leave or join the motorway the studs are green.

Take notice of any instructions given on variable message signs or by tunnel officials. They will warn you of any incidents or congestion ahead and advise you what to do.

Carrying a heavy load in your top box could make your motorcycle unstable, because the weight is high up and at the very back of the machine.

Don't be tempted to use harsh braking to stop swerving or snaking, as this could make things worse. You should reduce your speed gradually by easing off the throttle.

When passing parked cars, there's a risk that a driver or passenger may not check before opening the door into the road. A defensive driver will drive slowly and be looking for people who may be about to get out of their car.

Oncoming large vehicles may need to move to the middle of the road to pass safely under the bridge. There won't be enough room for you to continue, so you should be ready to stop and wait.

Be aware that older people might take a long time to cross the road. They might also be hard of hearing and not hear you approaching. Don't hurry older people across the road by getting too close to them or revving your engine.

Your safety and that of others depends on the condition of your tyres. Before every trip, make sure they

• are correctly inflated
• have at least the minimum legal depth of tread
• have no cuts or bulges.

Do these checks as part of a routine before every journey.

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).

If a mandatory speed-limit sign is shown above the hard shoulder, this lane can be used as a running lane. You must stay within the signed speed limit. Look out for any vehicles that have broken down and are blocking the hard shoulder.

Some powered wheelchairs and mobility scooters are designed for use on the pavement only and cannot exceed 4 mph (6 km/h). Others can go on the road as well, and this category cannot exceed 8 mph (12 km/h). Take great care around these vehicles. They're extremely vulnerable because of their low speed and small size.

Drivers are instructed that the left turn is prohibited for vehicles.

The engine cut-out switch is used to stop the engine in an emergency. In the event of a crash, this may help to reduce any fire risk.

If the lights at a level crossing keep flashing after a train has passed, you should continue to wait, because another train might be coming. Time seems to pass slowly when you're held up in a queue. Be patient and wait until the lights stop flashing.

Under the regulations, you must not enter a yellow box junction unless your exit is clear. However, you can enter the box and wait if you want to turn right and are only blocked by oncoming traffic or other vehicles also waiting to turn right.

Your tyres are your only contact with the road. To prevent problems with braking and steering, keep your tyres free from defects; they must have sufficient tread depth and be correctly inflated. Correct tyre pressures help reduce the risk of skidding and provide a safer and more comfortable drive or ride.

If your tank bag is too bulky, it could get in the way of your arms or restrict the movement of the handlebars.

A second-hand helmet may look in good condition but it could have received damage that isn't visible externally. A damaged helmet could be unreliable in a crash. Don't take the risk.

When riding, look ahead and around you. Don't look down at the front wheel, as this can severely upset your balance.

The 'dual carriageway ends' sign appears in a red triangle. It shows two carriageways coming together to indicate two-way traffic will continue ahead on a single carriageway road. You'll soon notice the central reservation coming to an end and lanes beginning to merge.

Never pour the oil down any drain. The oil is highly polluting and could harm wildlife. Put it in a container and dispose of it properly at an authorised site.

Long vehicles need more room than other vehicles to turn at junctions. The driver may take up a position that seems strange, but they have to do this to ensure their rear wheels don't mount the kerb as they turn. Don't overtake on the left - the driver won't expect you to be there and may not see you. Staying well back will also give you a better view ahead.

These signals can be found at level crossings, some airfields, bridges and emergency access sites. You must stop if the red lights are flashing. At level crossings, if the lights continue to flash after a train has passed, continue to wait because another train is coming.

If the number of points on your licence reaches six or more during your first two years of holding a full licence, your licence will be revoked. This includes offences you committed before you passed your test. You may ride only as a learner until you pass both the theory and practical tests again.

Traffic-calming measures help to keep vehicle speeds low in congested areas where there are pedestrians and children. A pedestrian is much more likely to survive a collision with a vehicle travelling at 20 mph than they are with a vehicle travelling at 40 mph.

Carrying a heavy weight high up and at the very back of the motorcycle can cause problems in maintaining control, particularly when riding at speed. If you have heavy items to carry, it's better to carry them in panniers and keep the weight roughly the same on either side.

Tyre pressures should be checked regularly. Look in your vehicle handbook for the correct pressures to use.

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.

This sign gives a clear instruction. You should prepare to negotiate a left-hand turn.

On a windy day, be aware that the blustery conditions might blow you or other motorcyclists out of position. Think about this before deciding to overtake.

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.

Note that this is the typical stopping distance. It will take at least this distance to think, brake and stop in good conditions. In poor conditions, it will take much longer.

Catalytic converters reduce the toxic and polluting gases given out by the engine. Never use leaded or lead-replacement petrol in a motorcycle with a catalytic converter; even one tankful can permanently damage the system.

You should move to another lane if it is safe to do so. This can greatly assist the flow of traffic joining the motorway, especially at peak times.

Various factors - such as weather and road conditions, vehicle condition and loading - affect how long it takes you to stop. You also need to add reaction time to this. The overall stopping distance at 50 mph includes a thinking distance of 15 metres (the reaction time before braking starts) plus your braking distance of 38 metres, giving a typical overall stopping distance of 53 metres (175 feet) in good conditions.

Try to give way to buses if you can do so safely, especially when the driver signals to pull away from a bus stop. Look out for people getting off the bus or running to catch it, because they may cross the road without looking. Don't accelerate to get past the bus, and don't flash your lights, as this could mislead other road users.

Your headlights help you to see in the dark, and help other road users to see you. Use your headlights whenever visibility is poor. Using them at other times may also help other road users to see you. On many motorcycles, the headlights are switched on automatically when you start the engine. Most European countries require headlights to be used at all times.

Worn bearings in the steering head can make your motorcycle very difficult to control. They should be checked for wear or correct adjustment and replaced if necessary.

You should plan ahead to avoid the need to stop suddenly, but if an emergency arises, you must be able to stop safely. Applying the front brake just before the rear brake will help you to stop safely and quickly.

Buses which carry children to and from school may stop at places other than scheduled bus stops. Be aware that they might pull over at any time to allow children to get on or off. This will normally be when traffic is heavy during rush hour.

These lines may be painted on the road on the approach to a roundabout, a village or a particular hazard. The lines are raised and painted yellow, and their purpose is to make you aware of your speed.

When you see a motorcyclist take a glance over their shoulder, they're probably about to change direction. Recognising a clue like this helps you to anticipate their next action. This can improve road safety for you and others.

When a motorcyclist is travelling slowly, it's likely that they're looking for a turning or entrance. Be patient and stay behind them in case they stop or change direction suddenly.