Based on GRVA-25-08, the document addresses blind spot accidents involving right-turning trucks and bicycles. It distinguishes between warning systems requiring driver reaction time and automatic brake intervention systems. The document notes that information systems with low intensity have low annoyance and low risk of deactivation, while high-intensity warnings risk driver annoyance and deactivation. It describes a specific scenario at approximately 15 km/h where a truck brakes after a turn has started with a bicycle detected at high confidence. The document indicates that next steps in safety regarding blind spot accidents should involve automatic brake intervention and suggests future discussion of UN R151 in GRVA.

Proposal to amend UN R151 (Blind Spot Information Systems) to account for vehicles of categories X and Y equipped with an Automated Driving System. BSIS is required to work when a driver is in control; vehicles of category Y and vehicles of category X without a manual mode intended to be operated on-board the vehicle are not required to comply. Vehicles of category X with a manual mode operated on-board not using a driver’s seat may be approved using alternative requirements demonstrating equivalent safety. The proposal amends scope, definitions, and approval marking provisions. This proposal amends and supersedes ECE/TRANS/GRSG/2026/10.

Clarification request of the consolidated text of paragraph 6.5.10 as amended
by supplement 4

Proposal from the GRSG task force on Automated Vehicles Regulation Screening to enable application of UN R151 to ADS vehicles, including the exemption of vehicle subcategories X and Y from the requirements, and to remove the references to Unique Identifier markings.