Currently, an equestrian-related road incident may go unrecorded unless a human is injured and taken to hospital for treatment from the scene of the accident. Statistics are therefore poor.
Initially, the website will record road traffic incidents concerning ridden and driven horses, incidents involving low-flying aircraft, road surface dressings, dangerous dogs, fireworks, wind turbines, and issues with gates.
There will be provision to add other concerns as they are identified.
The society says those sharing their experiences could make a huge difference to all riders.
"Accurate statistics are essential in order to enable the BHS to lobby government for better conditions for equestrians," the society said.
"The BHS can campaign only when it hase sufficient information to carry forward concerns."
Senior executive for safety Sheila Hardy, explains: "Without hard evidence and hard statistics, it is impossible to lobby those in power to make the changes that are required to ensure riding is safer for all.
"We need the public to help us before we can help them."
The website will be launched at the Horse Live event on November 13 and 14 at Stoneleigh Park, Warwickshire.
The British Horse Society's stand will have personnel available to discuss concerns or incidents.