The and dirt bike crashes page is easy; think of it like this: Person A driving a vehicle other than a dirt bike crashes into person B who is driving a dirt bike. The type of vehicle person A who strikes the person on the dirt bike is driving doesn’t matter, it can be a car or a truck, 18 wheeler crash, ford bronco crash, anything. Except a dirt bike crashing into another dirtbike because those types have their own page.