A woman who is now paralysed from the chest down as a result of spinal injuries is seeking a payout of more than £300,000.
Shelley Brown was riding her horse, Tommy, down a single track road in March 2006 when the accident happened.
In a high court writ, she claims that uninsured motorcyclist Ian Surry was approaching her at speed.
The 46-year-old alleges that she signalled to him to slow down but he continued and overtook her, subsequently turning into a car park in front of her.
According to Ms Brown, this frightened her horse and caused him to bolt into a bridleway and attempt to jump a fence.
He failed to make it over the object and fell, causing Ms Brown to sustained serious spinal injuries.
She is seeking a payout from the Motor Insurers' Bureau, which was established over 60 years ago and exists to compensate the victims of negligent uninsured and untraced drivers.