UN R79: Proposal for clarifications of ACSF Cat B1 provisions
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The intention of the proposed amendment is to clarify the existing text on continued support of an ACSF B1 if the boundary conditions are exceeded. It clarifies that under certain circumstances, e.g. if there are no lane markings present or if the vehicle has already drifted substantially out of the lane such that the lane may no longer be recognized, a continuation of support may no longer be possible or reasonable.

Reference Number: GRVA-07-29
Origin: CLEPA and OICA
Date: 15 September 2020
Proposal Status: Withdrawn
Related Documents:
GRVA-07-32 | UN R157: Proposal for amendments
GRVA/2021/8 | UN R79: Proposal for a supplement to the 03 series of amendments
Working Party on Automated and Connected Vehicles | Session 7 | 21-25 Sep 2020

39. The expert from OICA introduced ECE/TRANS/WP.29/GRVA/2020/22, amended by GRVA-07-20 with proposed amendments to the provisions on ACSF of Category C. He explained that GRVA-07-20 also incorporated GRVA-07-15, GRVA-07-16 and GRVA-07-19. He withdrew GRVA-07-18. The expert from AVERE supported the OICA proposal. GRVA-07-29 superseded by GRVA-07-32. GRVA had remained divided on such amendments since its fourth session.