13. The expert from EC on behalf of IWG VRU-Proxi, introduced through a presentation (GRSG-126-31) ECE/TRANS/WP.29/GRSG/2023/21 that would allow vehicles with narrower cabs or A pillars positioned inboard of the edge of the cab to be approved on a reduced limit value, providing a level of safety equivalent to that of the original version of the UN Regulation. Moreover, he added that the proposal also introduced an alternative approach for vehicles with competing objectives (e.g. high-capacity transport, high efficiency, new powertrain technology, impact on freight industry) with direct vision challenges. He also introduced GRSG-126-06 to clarify the term “direct vision”. The expert from the United Kingdom introduced two presentations (GRSG-126-33) and reminded GRSG about the premise that established the method of UN Regulation No. 167 and that highlights a concern with the proposed amendment. He also introduced GRSG-126-35 commenting on the above proposal from IWG VRU-Proxi. He finally introduced ECE/TRANS/WP.29/GRSG/2023/19 to define a Subsection Frontal Visible Volume within the area of greatest risk with the aim of ensuring that VRUs directly in front of the vehicle cannot be in a blind spot between direct and indirect vision. Finally, GRSG adopted ECE/TRANS/WP.29/GRSG/2023/21 as amended by GRSG-126-06 and GRSG-126-07-Rev.1. At the same time, it was agreed to send ECE/TRANS/WP.29/GRSG/2023/19 to IWG VRU-Proxi for revision and possible submission of an official document at the April 2024 session of GRSG. The secretariat was requested to submit ECE/TRANS/WP.29/GRSG/2023/21 (as amended by annex IV to the report) as draft Supplement 1 to the original version of UN Regulation No. 167, for consideration and vote at the March 2024 sessions of WP.29 and AC.1.