Many drivers believe horses should not be allowed on the road, but under the Australian road rules a horse being ridden on the road is considered a vehicle and is subject to the same road rules as any other vehicle.

Most riders, however, will tell you they prefer to ride off the road if possible, particularly if their horse is shod.

"Riding a horse that has horse shoes on tar roads is like being on an ice-skating rink," said Paula Greenaway of Greenaway Taxis.

While Paula spends her workday behind the wheel of her car, in her spare time she is often out riding with her husband and daughter Claudia.

The family is deeply concerned with the lack of driver education about horses and caution shown around horses on the road.

"We ride four or five times a week, and nine times out of 10 they fly past," said Paula.

Drivers may not know that horses are creatures of fright and flight, and although a rider might appear to be under control of the animal, anything that startles a horse can cause an instantaneous response that can lead to fatal consequences for horses, riders and drivers.

Even the most quiet and well-behaved horse is not immune to being spooked, and may jump sideways or bolt when terrified. A horse might kick out and catch it's hoof on the car - a scary thought.

The South Australian Driver's Handbook has some important tips for drivers. including:

If you see a horse and rider on or near a road you should:

* Treat the horse as a potential hazard

* Slow down and, when safe, pass with care

* Stop your vehicle on the left side of the road and turn off the engine if the horse is unsettled or the rider signals this to you

* Not accelerate or rev your engine near a horse

* Not sound your horn or make unnecessary noise, and

* Not throw objects or shout at a horse or rider.

Follow these courtesies and you will most likely find some very grateful riders.

For more information on horse safety on the road for both riders and drivers, visit www.horseroadsafety.org.au