This revision reproduces the following amendment(s):
UN R151: Proposal for Supplement 4 to the original version

Proposal from GRSG to resolve issues with the application of provisions to vehicle configurations for which BSIS may not work correctly (e.g. because of the vehicle body, the vehicle use) to allow more flexibility for system design and facilitate introducing automated brake functions.

Authentic and legally binding text WP.29/2022/147