Posted By Stuart Nagle
Mark.
From your posting I would summise that you are principally concerned with the behaviour of horses exposed to motor traffic on your site, inso much as the site has numerous tracks and roadways that run through the site, exposing horses and riders to risk.
I am sure that there are many more people more experienced that I in this subject area, and no doubt you will already know that horses can react in very many ways when situations differ only slightly.
Working in an area that boarders the countryside, I regularly pass horse riders on the road, and the same two lady riders regularly each evening on the way home from work during lighter evenings, riding along the public highway in a 40MPH zone of road varying from country lanes to village high streets.
I and many other drivers have passed these horses and their riders slowly and safely on many occassions, but witnessed last year, an occassion, where although nothing appeared different, to me at least, the leading horse (a mature horse approx 14 hands) was for some reason starled by the small (red) car just starting to pull out and pass it, and the horse reared up and threw the lady off - fortunately onto the adjacent soft grass verge.
She was unhurt, luckily, but shows how horses, even those that appear to be used to traffic can be starled and react.
On some stables/riding schools in my area, I have noticed that all but essential traffic on site is directed to car parking areas away from the stabling/riding areas, and that these areas are screened-off in the main from the riding areas by trees/hedges/fencing.
The only vehicles that appear to be used on the site vary from small 4 wheel drive single rider vehicles, to small tractors and hand pushed barrows.
As suggested above, there is existing information detailing segregation procedures for traffic and pedestrians etc on sites, but personally I would err on the side of exclusion of all vehicles where those vehicles have no role to play in the management of the stabling or transportation of the animals. This will, if achievable, lessen the risk of adverse reaction to direct noises and colours of cars, and reduce the likelyhood of horses rearing or stampeding in panic.
The incident above also exemplifies how even when what appears to be a well trained and placid horse, when riden on the road, can, for no obviously appearent reason, react and cause danger not only to riders, but other road users as well as to the horse itself.
Stuart