This summer my dad recently got into an accident on our b6000 tractor. I'm not sure of the exact date it was made but we think the 1970s. My dad was driving the tractor up a gravel road at our house. He has done this a million times but this time the front wheels came up and he lost control. He tried to abandon ship (jump off). Unfortunately he did not jump far enough and ended up stuck under the tractor while the tractor was on its side in a ravine next to the road. His leg was caught under the wheel and the tractor was still running. the wheel continued to rotate and ground into his leg until a neighbor found him nearly 30 minutes later. I'm wondering if these tractors have a tilt switch or any kind of safety feature so if the tractor rolls it would turn off. We are wondering if this was preventable or if there is a way to prevent it in the future. My dad has a long recovery ahead due to the severity of his wounds from the tire. The tractor is fixed and running but we are all a little hesitant to use it. We would like to make it safer. I have been in contact with Kubota. We have tens of thousands of dollars in medical expenses so far and he has a year of recovery.