The Task Force reviewed the effectiveness of UN R151, R158, and R159 in reducing accidents and examined new or enhanced technologies and detection ranges. Regarding accident reduction effectiveness, the Task Force consensus was that it is too soon for quantitative review as vehicles equipped with compliant systems are still limited, though qualitative approaches surveying drivers and operators of compliant vehicles remain possible. On detection ranges, UN R151 currently allows a 900mm no detection zone to the side of the vehicle and UN R159 allows an 800mm no detection zone to the front. The Task Force recommended reviewing actual detection performance of vehicles and exploring whether the non-detection zones can be reduced using new technologies such as dual RADAR sensors.

Proposal to delete the Unique Identifier (UI) marking provisions

The VRU-Proxi informal group held its 35th session on 12 December 2024 to discuss methodology and deliverables under new Terms of Reference adopted at GRSG-128-36 Rev. 3. An error was identified requiring correction of a reference from UN Regulation No. 158 to UN Regulation No. 159. The group established taskforces to address: Separate Technical Unit approvals for UN Regulations 151, 158, 159, and 166; scope extensions for UN Regulation 151 (N₁ vehicles) and UN Regulation 158 (O₁–O₄ vehicles); assessment of collective regulatory effects on VRU collisions; review of detection ranges for UN Regulations 151 and 159; pedestrian safety around buses; and benefits of camera and detection system combinations in UN Regulation 158. The next meeting is scheduled for March 2025.