Minister for Regional Transport and Roads Paul Toole said it was important to remember that riders and horse-drawn vehicles have the same rights and responsibilities as other drivers, motorcycle riders and cyclists using the road.

"Horses and other livestock aren't uncommon on roads in the bush, and this campaign reminds everyone to share the road safely," Mr Toole said.

"Drivers should slow down and allow plenty of room when passing a horse, whether it's being ridden, led or pulling a vehicle. Horses are easily spooked and can be unpredictable, so don't use your horn or rev your engine.

"Horses are considered a vehicle on the road, so riders need to obey the road rules, ride on the left-hand side in the same direction as traffic, avoid tight corners or crests and try keep a good line of sight."

In the last 10 years, there have been nine fatalities involving a ridden horse, while there were 54 casualty crashes involving a riderless horse struck by a vehicle, resulting in the deaths of two people and serious injuries to 15 others.

Jo Rugg of Bodalla Horse Agistment Centre said it was good that the government was reminding motorists about horse riders on roads.

"Most drivers are respectful and aware, they'll slow down, wave and smile but we have still had some close calls over the years with motorists going too fast and just seemingly oblivious to the fact there is a large animal on the road in front of them.

"Trail bike riders are the best, they'll often slow down or completely stop and turn off their bikes," she said.

Read more: Horse accident puts family's life on hold

The Country Women's Association (CWA) of NSW president Stephanie Stanhope said an incident earlier this year, which saw a rider injured and a horse euthanized after being hit by a vehicle, served as a reminder to keep up to date on road rules.

"We are seeing too many close calls and often these animals are a major part of a rider's livelihood, so we ask that motorists are respectful when sharing the road with horse riders and horse-drawn vehicles to avoid any unfortunate incidents," Ms Stanhope said.

"Riders should also be aware of their surroundings, including traffic, pedestrians, road surfaces and changing weather conditions, and, if possible, ride during daylight hours.

"It is also good practice to avoid tight corners or crests and instead ride on roads where motorists have a good line of sight, and the wearing of high visibility or bright-coloured clothing and a helmet that meets Australian standards is strongly recommended."

For more information, visit https://roadsafety.transport.nsw.gov.au/stayingsafe/drivers/animalsoncountryroads/horses-in-traffic.html.