50. The expert from Germany, on behalf of the Co-Chairs of the IWG on ACSF, introduced GRRF-81-32 presenting the status of the work done (GRRF-81-18) by the IWG on ACSF. He explained that the IWG was working on the provisions for the proposed five categories of ACSF as well as requirements and testing procedures for the proper assessment of the safety performance of these functions. He clarified that the speed limit for Category E systems would be 130 km/h but that other Categories could work at higher speeds. GRRF endorsed the status report and agreed to resume consideration of this agenda item at its next session.