Theory Test #4

The anti-lock braking system has sensors that detect when the wheels are about to lock. It releases the brakes momentarily to allow the wheels to revolve and grip, then automatically reapplies them. This cycle is repeated several times a second to maximise braking performance.

Horses can become startled by the sound of a car engine or the rush of air caused by passing too closely. Keep well back and only pass when it is safe; leave them plenty of room. You may have to use the other side of the road to go past: if you do, first make sure there is no oncoming traffic.

You should carry out frequent checks on all fluid levels but particularly brake fluid. As the brake pads or shoes wear down the brake fluid level will drop. If it drops below the minimum mark on the fluid reservoir, air could enter the hydraulic system and lead to a loss of braking efficiency or complete brake failure.

You must ensure that you can be seen by others on the road, but you don't want to dazzle them. Use your dipped headlights during the day if the visibility is bad. If appropriate, use your rear fog lights but don’t forget to turn them off when the visibility improves.

Slow-moving, large vehicles might slow down the progress of other traffic. On a steep gradient this extra lane is provided for these slow-moving vehicles to allow the faster-moving traffic to flow more easily.

White studs are found between the lanes on motorways. The light from your headlights is reflected back and this is especially useful in bad weather, when visibility is restricted.

Follow the instructions given by the signs or by tunnel officials. In congested tunnels a minor incident can soon turn into a major one with serious or even fatal results.

As you look through the rear of your vehicle you may not be able to see a small child. Be aware of this before you reverse. If there are children about, get out and check if it is clear before reversing.

There will be an orange label on the side and rear of the tanker. Look at this carefully and report what it says when you phone the emergency services. Details of hazard warning plates are given in The Highway Code.

Windscreen pillars can obstruct your view, particularly at bends and junctions. Look out for other road users, particularly cyclists and pedestrians, as they can be hard to see.

You may have to pull forward slowly until you can see up and down the road. Be aware that the traffic approaching the junction can’t see you either. If you don’t know that it’s clear, don’t go.

On motorways reflective studs are located into the road to help you in the dark and in conditions of poor visibility. Amber-coloured studs are found on the right-hand edge of the main carriageway, next to the central reservation.

You shouldn’t use rear fog lights unless visibility is seriously reduced. If you forget to turn them off when the weather improves they can
• be confused with brake lamps
• dazzle following drivers.
A warning light will show on the dashboard to indicate when your rear fog lights are on. You should know the meaning of all the lights on your dashboard and check them before you move off and as you drive.

When approaching a junction where the traffic lights have failed, you should proceed with caution. Treat the situation as an unmarked junction and be prepared to stop.

An immobiliser makes it more difficult for your vehicle to be driven off by a thief. It is a particular deterrent to opportunist thieves.

Wet weather will affect the time it takes for you to stop and can affect your control. Your speed should allow you to stop safely and in good time. If another vehicle pulls into the gap you’ve left, ease back until you’ve regained your stopping distance.

When driving on motorways, you can’t just pull up to answer your mobile phone. Do not stop on the hard shoulder or slip road. To avoid being distracted it’s safer to switch it off when driving. If you need to be contacted plan your journey to include breaks at service areas so you can pick up any messages when you stop.

If you stop for pedestrians and they don’t start to cross don’t wave them across or sound your horn. This could be dangerous if another vehicle is approaching which hasn’t seen or heard your signal.

A mandatory speed limit sign above the hard shoulder shows that it can be used as a running lane between junctions. You must stay within the speed limit. Look out for vehicles that may have broken down and could be blocking the hard shoulder.

Rear fog lights make it easier to spot a vehicle ahead in foggy conditions. Avoid the temptation to use other vehicles’ lights as a guide, as they may give you a false sense of security.

Make sure that the vehicle you’re driving is well ventilated. A warm, stuffy atmosphere will make you feel drowsy. Opening a window and turning down the heating can help you to remain alert on a long journey.

Fitting a stabiliser to your tow bar will help to reduce snaking by the caravan especially where there are crosswinds. However, this does not take away your responsibility to ensure that your vehicle/caravan combination is loaded correctly.

Strong winds or buffeting from large vehicles can cause a trailer or caravan to snake or swerve. If this happens, ease off the accelerator. Don’t brake harshly, steer sharply or increase your speed.

If a casualty isn't breathing normally, cardiopulmonary resuscitation (CPR) may be needed to maintain circulation. Place two hands on the centre of the chest and press down hard and fast – around 5–6 centimetres and about twice a second.

Before emerging right onto a dual carriageway make sure that the central reserve is deep enough to protect your vehicle. If it’s not, you should treat it as one road and check that it’s clear in both directions before pulling out. Neglecting to do this could place part or all of your vehicle in the path of approaching traffic and cause a collision.

It’s important to keep a safe distance from the vehicle in front at all times. This still applies in congested tunnels even if you are moving very slowly or have stopped. If the vehicle in front breaks down you may need room to manoeuvre past it.

When approaching a contraflow system reduce speed in good time and obey all speed limits. You may be travelling in a narrower lane than normal with no permanent barrier between you and the oncoming traffic. Be aware that the hard shoulder may be used for traffic and the road ahead could be obstructed by slow- moving or broken down vehicles.

At the scene of an incident, always be aware of danger from further collisions or fire. The first priority when dealing with an unconscious person is to ensure they're breathing normally. If they’re having difficulty breathing, follow the DR ABC code.

If your vehicle is fitted with drum brakes they can get hot and lose efficiency. This happens when they’re used continually, such as on a long, steep, downhill stretch of road. Using a lower gear will assist the braking and help prevent the vehicle gaining momentum.

A green arrow indicates that the lane is available to traffic facing the signal. A white diagonal arrow means that the lane is closed ahead and traffic should move to the next lane on the left. A red cross means that the lane is closed to traffic facing the signal.

Try not to hold up a queue of traffic. Other road users may become impatient and this could lead to reckless actions. If you’re driving a slow-moving vehicle and the road is narrow, look for a safe place to pull in. DON’T wave other traffic past since this could be dangerous if you or they haven’t seen an oncoming vehicle.

On a quiet country road always be aware that there may be a hazard just around the next bend, such as a slow-moving vehicle or pedestrians. Pedestrians are advised to walk on the right-hand side of the road if there is no pavement, so they may be walking towards you on your side of the road.

Any car over three years old MUST have a valid MOT certificate before it can be used on the road. Exceptionally, you may drive to a pre-arranged test appointment or to a garage for repairs required for the test. However you should check this with your insurance company. Driving an unroadworthy vehicle may invalidate your insurance.

A red cross above the hard shoulder shows it is closed as a running lane and should only be used for emergencies or breakdowns. At busy times within an Active Traffic Management (ATM) area the hard shoulder may be used as a running lane. This will be shown by a mandatory speed limit on the gantry above.

These markings are used outside schools so that children can see and be seen clearly when crossing the road. Parking here would block people's view of the school entrance. This could endanger the lives of children on their way to and from school.

Don’t reverse into a main road from a side road. The main road is likely to be busy and the traffic on it moving quickly. Cut down the risks by reversing into a quiet side road.