Today, I was put in an FIV at the most dangerous point. FIV means "First Intervention Vehicle", which is usually located at the start of each special stage containing two medical personnel, motor sport fire and track marshals, and it may be required to enter the special stage in the event of an accident.
In the picture, the car number zero is at the starting point of the special stage. The driver of this rally car was what you call the representative of the Japanese rally drivers. His time would be the target of the entrants.
I was ready in the 4-wheel drive off-road vehicle with sticker saying "FIV". I could see only the start of the rally cars today.