Moving a casualty could cause further injury, so it's important that this is only done if there's danger to them where they are.

When a vehicle changes direction, forces are applied to the vehicle and its load. Braking at the same time can result in additional forces being introduced, and this can lead to a loss of control. For this reason, braking should be carried out while driving in a straight line, so preventing these forces from acting together.

Take care to secure caps and tank hatches. Diesel is very slippery and, if spilled on the road, it's particularly dangerous to motorcyclists.

Beware of children playing in the street and running out into the road. If a ball bounces out from the pavement, slow down and stop if necessary. Don't encourage anyone to fetch the ball from the road. Other road users might not see your signal and you might lead a child into danger.

While driving on a building site, bricks, mud or other debris can become lodged between a lorry's double rear wheels. When you leave the site and increase your road speed, anything lodged between the tyres could be thrown out. This flying debris can be a hazard for drivers of following vehicles and can create dangerous road conditions, especially for motorcyclists.

Check your mirrors to make sure that it's safe to overtake. Remember that traffic coming up behind will be travelling at a faster speed.

Wind deflectors lower a vehicle's wind resistance. The vehicle therefore requires less energy to drive it forward, and this reduces its fuel consumption. Ecosafe driving techniques, correct tyre pressures and proper maintenance also help to maximise fuel efficiency.

The parking brake must always be set whenever you leave the vehicle. It's an offence not to leave your vehicle properly secured.

To help a casualty who isn't breathing, you should remove any obstructions from their mouth and tilt their head back slightly. These actions will help to keep their airway clear and maintain the correct position if mouth-to-mouth resuscitation is required.

The priority when dealing with an unconscious person is to make sure they have a clear airway and can breathe. Stay with the casualty and make sure someone rings for an ambulance.

Continually using the brakes could cause them to overheat. When that happens, they become less effective. This is called brake fade, and it occurs most often when the driver has to control the vehicle's speed on a long downhill gradient. To help prevent brake fade, use the endurance brake (retarder) and a lower gear to keep the vehicle's speed in check, rather than the wheel-mounted brakes.

Always indicate your intentions in good time; this will allow others time to alter their speed and course if necessary. Always check your blind spots before changing lanes.

Pedestrians who are part of an organised walk using the road at night should wear bright or reflective clothing. The walker in front should display a white light, while the one at the back should display a red light. Be particularly careful, slow down and give the walkers plenty of room.

You should use a suitable restraint and chock the wheels when another vehicle is being carried piggyback. Don't just rely on the other vehicle's parking brake.

The main causes of lorries shedding their loads are driver errors, such as sudden changes of speed or direction, driving too fast for the conditions, and harsh braking.

Rain, combined with oil, rubber particles, dirt and debris on the road surface, reduces the tyres' grip on the road. It can be especially slippery when it rains after a long dry spell.

The view you get in your mirrors may vary, depending on the size of the trailer and the load it carries. Always adjust your mirrors to ensure that you have the best possible view down each side of the trailer before you drive away.

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.

Always maintain a safe following distance from the vehicle in front. If another vehicle pulls into the gap, slow down to re-establish a safe following distance. Following too close is dangerous and places you and other road users in unnecessary danger; your view of the road ahead will be seriously reduced, and you won't be able to see or plan effectively.

Drivers should carry out a walk-round check daily, as part of a routine. They have a legal responsibility to take all reasonable precautions to ensure that legal requirements are met before they drive any vehicle.

If you plan your journey to avoid busy times, you can avoid congestion. That way, your overall journey time may be reduced, so cutting costs and making you a more efficient driver.

Check that the ground is firm and level before you uncouple the trailer. If you need to, place a heavy plank under the legs to distribute the weight and stop the legs sinking into the ground. Don't park illegally. Make sure that your unattended trailer isn't blocking access for others.

Applying a firm, continuous brake pressure will enable the anti-lock braking system (ABS) to function properly. However, ABS is becoming increasingly sophisticated, so you should read the vehicle manufacturer's handbook for its advice about using the system.

A bus equipped with a speed limiter must also be fitted with a plate showing the speed setting. This must be fitted in an obvious position, where it can be clearly seen.

Spilt diesel creates a serious risk to other road users, especially motorcyclists. Take care when refuelling and make sure that all filler caps and tank hatches are properly closed and secure.

Keep a check in your mirrors as you're driving to make sure that the sheets are secure. Air can force itself under the sheets and work them loose.

The type of suspension fitted to a vehicle will influence its resistance to 'roll-over'. Modern tri-axle semi-trailers fitted with single wheels on each side extend the tracking width available, making this the most stable configuration.

The maximum speed for lorries over 7.5 tonnes maximum authorised mass on a motorway is 60 mph. However, it may not always be appropriate or possible to drive at this speed, because of the weather, volume of traffic and other factors.