Accident with emergency vehicle -RTW -Experience values?

Has anyone ever been able to gain experience with a traffic accident with an emergency vehicle during a “blue light drive” ? My customer has rushed into such a crossroad. The RTW entered the intersection with blue light without siren unbraked over red and colliding with my customer’s car. According to his information everything is quite easy. The police named the RTW as the cause of the accident. And he can assert his claims at a certain office. s can’t be so easy-or? I recommended that he submit the report to the office and then immediately turn on an RA at the first signs of “circuits”. He has no legal protection. I can hardly imagine that there will be compensation for this. Otherwise, the claims shouldn’t be different from those on a civil vehicle?