Proposal for amendments to ECE/TRANS/WP.29/GRSG/2024/40 to make the qualitative criteria in
paragraph 15.2.4.9.2. (new) ambiguous if they are separated from the concept of an
obstruction rate of 10% or less as stipulated in the current regulations.

To improve the effectiveness of LPDs in preventing left- or right-turn collisions, Japan intends to submit the following proposals:
1. Eliminating the exemption for semi-trailer tractors
2. Reducing the lower edge ground clearance of LPDs
3. Clarifying the upper edge structure of LPDs
4. Adding exemption to ensure BSIS requirements

Proposal to amend UN R73 on Lateral Protection Devices, amending ECE/TRANS/WP.29/GRSG/2024/38. The proposal adds safety requirements including a new definition of Blind Spot Information System referencing UN R151. Key modifications lower the minimum height of the lower edge of LPD from 550 mm to 450 mm for most vehicles, while maintaining 550 mm for vehicles with axle distance exceeding 6.5 m. The proposal includes transitional provisions and references GRSG-113-13. Japan and France submitted this based on traffic accident data showing reduced fatalities with lower LPD height requirements.

Proposes additional requirements for LPD installation on vehicles equipped with blind spot information systems are specified.

Proposal to amend GRSG/2026/30. This document proposes amendments to UN Regulation No. 46 to clarify definitions and requirements for devices for indirect vision. The amendments include revised definitions of external original surface, protruding supports, housing, and arm; clarifications to paragraphs 6.1.1.10 and 6.2.1.4 regarding projection limits in folded positions; modifications to paragraph 15.2.4.9.2 concerning obstruction and horizon visibility; and amendments to paragraph 16.1.1.3.1 addressing safety-related rearward indirect vision information.

Japan submitted this proposal to clarify the
requirements of the Regulation on rear underrun protection devices. This proposal is based on informal document GRSG-101-10-Rev.1.

This proposal from Japan is a modified version of GRSG/2011/31, which was submitted for the purpose of preventing road accidents due to the inability of drivers of vehicles with an extremely high eye point to view small vehicles (e.g. motorcycles) in front.

Text prepared by Japan to amend the requirements for fire prevention under certain conditions in the event of a rear collision.

Text prepared by Japan to add field-of-vision provisions to enhance the safety of pedestrians and other vulnerable road users in narrow alleys and by-streets and other improvements to Regulation No. 46

Correction to the descriptive paragraph of document GRSG/2013/5, noting its purpose as “to increase the safety benefits of the driver’s field of vision and the pedestrian safety in narrow streets”.

Proposal to amend the requirements for fire prevention under certain conditions in the event of a rear collision. This document supersedes the earlier proposal contained in document GRSG/2013/4.

Proposal to add field-of-vision provisions to enhance the safety of pedestrians and other vulnerable road users in narrow alleys and by-streets and other improvements to UN R46.

Proposal to correct an oversight by aligning the “alternative procedures” provisions of the regulation with the previously adopted amendment of the regulation that raised the rear-impact speed to between 48 and 52 km/h (03 series of amendments).

Proposal to remove the provisions for welded constructions of compressed natural gas (CNG) cylinders or metal liners, including high-strength steel CNG cylinders.

Proposal to align the impact safety requirements with the latest proposed amendments to UN R46 (GRSG-126-24-Rev.1), to exempt devices approved to UN R26 or R61, and to otherwise clarify and correct the text.

Proposal to amend the lateral protection device clearance distances.

Proposal to amend the transitional provisions to exempt Contracting Parties that apply UN R73 on or after the entry into force of the 02 series from the obligation to accept approvals granted in accordance with paragraph 11.11. of the Regulation.