ABS systems work by rapidly pumping the brakes on and off several times per second (much faster than the best and quickest human) . This allows the driver to maintain directional control in an emergency. This is especially useful if you get into trouble on a slippery surface.

There is some suggestion that vehicles fitted with ABS don't have better safety records than those vehicles not equipped with ABS but this is more likely to be because of the way the vehicles are driven, rather than the ABS system.

For drivers who 'tailgate' ABS will be of little use. If your view from the drivers seat is usually like the picture on the right - drop back!

The latest technologies go one step beyond ABS and intervene when a vehicle seems to be going off course. This is done by applying the brakes on individual wheels.

Points to bear in mind when using ABS

Read your vehicle manual ...

Your owner's manual will explain how to use the ABS most efficiently in your particular vehicle.

Keep your foot on the brake ...

With many systems that can be a noise (like a machine gun) and a pulsating of the brake pedal. The first time you experience this it can feel strange. Don't wait for an emergency, go out and test your ABS to get a feel for it (Note: Ensure that you do this in a safe location that is clear of other traffic and people).

Remember to steer ...

This means looking where you want to go (your escape route). This might mean looking at the verge and driving off the road. If you stare at the danger, your arms won't work and you will still hit it.

The rule is 'Look at what you want to hit!' - the space, not the obstruction.

Note: Some vehicles (particularly vans and pick-up trucks) are fitted with rear wheel only ABS. Make sure you know what you are driving. If your system is rear-wheel only you will need to release the brake pedal to regain steering control. Rear wheel ABS is designed to stop the rear end slipping in an unloaded vehicle or in off-road situations.

Always keep a safe distance ...

Leave sufficient (see the two-second-rule) space in which to stop. ABS is a great help but it won't stop you crashing. If you drive too fast or too close, expect to suffer the consequences.