When emerging, if you can't see, don't go. Be aware that there could be an approaching cyclist or motorcyclist hidden by parked vehicles. Edge out very slowly, checking in all directions, and be ready to stop.

Roof markings on lorries can help police air-support units to identify stolen vehicles. Fleet operators, particularly those that regularly carry vulnerable or dangerous loads, are encouraged to use these markings.

Always think of your own and others' physical safety before lifting any heavy object. Plan the lift and move any other items out of the way. Decide whether you need assistance.

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

When moving a load, make sure you don't have to bend down or stretch up to reach the handles. Also, try to push rather than pull, so you can see where you're going.

If you're carrying a high-value load, you should consider your personal safety. There's always the possibility of an attempted theft. Watch out for and report anything unusual, such as people taking a special interest in you or your vehicle.

Whenever possible, call the emergency services first. If you're able to give first aid, remember DR ABC. Check for Danger, then check the casualty for a Response. Check the Airway, and try to establish Breathing by gently lifting the chin up and forward. Give Compressions if necessary. Try to stop any severe bleeding. If you feel you aren't capable of carrying out first aid, consider taking some training. It could save a life.

A motorcycle can be lost out of sight behind another vehicle. The use of the headlights helps to make the motorcycle more easily seen.

Give them plenty of room. Watch carefully in your nearside mirror, as the high winds and the buffeting effect from your vehicle may blow them off course.

Most diesel engines use a high-pressure fuel-injector system that will deliver pressurised fuel directly into the combustion chamber of the engine. This system is known as a direct-injection engine.

When driving downhill, gravity will cause the vehicle to increase speed. More braking effort will be required, and stopping distances will increase.

As you pass pedestrians or vehicles on your left, you should use your nearside mirror and check that you've passed them safely. You need to allow a good safety margin before you move back to the left.

When passing horses, allow plenty of space, slow down and stop if you need to. Animals are easily frightened by sudden or loud noises and can quickly become uncontrollable, so don't sound your horn or rev the engine.

When someone ahead of you switches on their hazard warning lights, it means that they've spotted a hazard that you may not be able to see yet. Slow down and be ready to stop if necessary.

Sulphur produces acidic gases. Diesel fuels with lower sulphur content have been produced to reduce exhaust emissions that harm both people and the environment.

If you're involved in an incident that causes damage or injury to a person or property, you must stop. You must also give your details to anyone who has reasonable grounds to ask for them. If you don't do this, you must inform the police as soon as possible and in any case within 24 hours.

If the trailer begins moving while you're working on it, you could put yourself and others in great danger. You must make sure that it's properly secured by the brake before you start work.

As you turn a corner, the hanging meat carcasses will all swing to one side of your vehicle, adding extra pulling force towards the outside of the curve. The faster you turn a corner, the greater this force will be. After the corner, the carcasses will continue to swing back and forth, like pendulums, making the vehicle unstable.

The forces acting on a lorry will try to move it in a straight line as it enters a bend. The greater the weight, the greater the force. If you're going too fast, there's a danger that you could lose your load or tip over.

If your vehicle catches fire in a tunnel and it can't be driven, stop on the side of the road, as far away from passing traffic as possible. Turn off the engine and warn other traffic by switching on your hazard warning lights.

Rope hooks aren't designed to withstand high forces. They're usually just welded or bolted to the underside of the platform. Many are so weak that they can easily be distorted by a ratchet buckle when a webbing strap is tightened. Secure anchorage points should be built into the main frame or chassis of the vehicle.

Air suspension provides a smoother journey than traditional suspension and transmits less vibration to the road surface, under-road services and nearby structures, such as bridges. It's considered to be environmentally friendly because it reduces damage to the road network.

The vehicle handbook will clearly explain what maintenance may be carried out by the driver. Always refer to it and comply with the safety guidance that it contains. However, you need to be aware of your employer's policy on making any minor repairs.

Make sure you or someone else has called the emergency services. Check the casualties and, if you feel able to give first aid, do so. Alternatively, ask any bystanders if they can help.

It's a legal requirement that your tyres have at least the minimum permitted depth of tread and are in good condition before you start any journey. Make sure that you inspect them before setting off, and at regular intervals.

If there's heavy rain, the spray-suppression equipment fitted to your vehicle will protect other road users from loss of vision when following or passing your vehicle. Check the wheel arches to make sure the fitments haven't worked loose and no parts have broken off. Well-maintained equipment will force the spray back down onto the road, instead of out to the rear and the sides of the vehicle.

Some highly dangerous chemicals have to be transported at prescribed temperatures. Drivers must be fully trained in the use of these specially designed, temperature-controlled vehicles.

Always be aware of your limited vision around your vehicle, due to its size and shape. Never move off without checking along the nearside of your vehicle. You should be aware of the possibility of cyclists and motorcyclists getting trapped between your vehicle and the kerb.