Here is a versatile system that involves using an unmanned ground vehicle and drone to remotely monitor accident areas. RAM consists of an all-terrain vehicle for ground accident monitoring. It has a max speed of 60 km/h and payload of 160kg.
The drone is useful for aerial monitoring of accident areas. It has a flight range of 50m and can run an unlimited amount of time thanks to a wired power transfer system. More info is available here.