AEBS: Draft Proposal for a new UN Regulation
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Interim draft text for a light vehicle AEBS regulation prepared on behalf of the informal group on AEBS. It provides the state of play of the discussions held the informal group up to date. It aims at providing the experts of Working Party on Automated/Autonomous and Connected Vehicles (GRVA) the opportunity to react, comment and contribute to work performed by the informal group until now.

Reference Number: GRVA-01-02
Origin: Japan and EC
Date: 27 July 2018
Proposal Status: Superseded
Related Documents:
GRVA-01-10 | Proposals from the IWG on AEBS
GRVA/2019/5 | AEBS: Proposal for a new draft UN Regulation on the approval of motor vehicles with regard to their Advanced Emergency Braking System for M1 and N1 vehicles
Discussion(s):
Working Party on Automated and Connected Vehicles | Session 1 | 25-28 Sep 2018

36. The expert from EC, Co-Chair of the IWG on Advanced Emergency Braking Systems (AEBS) presented GRVA-01-10 with a status report on the activities of the group on the drafting of a new UN Regulation with provisions applicable to M1 and N1 vehicles as reproduced in GRVA-01-02. He presented the key performance requirements defined for so called vehicle-to-vehicle and vehicle-to-pedestrians Advanced Emergency Braking (AEB) systems and highlighted the open issues discussed by the group on provision for manual AEB deactivation and the definition of performance requirements for vehicle-to-bicycle systems.

37. The expert from UK, supported by the expert from the Netherlands, questioned the proposed value of the maximum differential test speed (42 km/h) that targets collision avoidance. He suggested 50 km/h instead of 42 km/h. He expressed doubts that a staged approach for vehicle-to-pedestrian and vehicle-to-bicycle AEB systems would be appropriate. The expert from OICA justified the value of the maximum differential speed for collision avoidance noting that Euro NCAP was requesting less than this value and justified the staged requirements especially for vehicle-to-bicycle AEBS systems because of the ongoing development process of such systems.

38. The expert from Canada suggested to specify performance-based requirements for all aspects to be tested, including the adhesion criteria of the track surface used for testing. GRVA noted the existing relevant precedent in UN GTR No. 3 and UN Regulation No. 78 and the corresponding value proposed in the draft.

39. The expert from Italy mentioned the risk related to false positive AEB system activation and the need of a manual AEBS deactivation function. The experts from Germany and UK expressed support for provisions on automatic deactivation function in limited cases. They disagreed with the proposal for provisions allowing the manual deactivation of AEB systems.

40. The Chair highlighted the provisions related to the AEBS performance outside of the testing conditions.