24. The expert from OICA introduced working documents ECE/TRANS/WP.29/GRSP/2025/42, GRSP/2025/45 and GRSP/2025/46 to allow putting the vehicle back on its wheels in case of overturning during the collision test in order to allow door openings as per paragraph 5.3.3. The opinions on this issue were divided. The experts from the Republic of Korea, Germany, the Kingdom of the Netherlands and Japan argued that overturnings were an artifact of the test and were highly dependent on the tires used and the friction coefficient of the floor, both of which were not part of the test specifications. They therefore interpreted that the current text already allowed putting the vehicle back on its wheels and were in favor of the proposal as a clarification. On the other hand, the experts from Spain, France and the United Kingdom argued that being able to open the doors after the crash was an integral part of the test and their current interpretation was that putting the vehicle back on its wheels was not allowed. GRSP agreed that it was important to continue discussing this issue in the next session in order to ensure a harmonized interpretation across different type approval authorities.

25. The expert from the Russian Federation made a presentation (informal document GRSP-78-05) advocating for an increase in the mass of the mobile deformable barrier used in UN Regulation No. 95. He shared data showing how the mass of new vehicles is significantly larger than those being built at the time of the creation of the regulation, with even larger increases in the case of electric vehicles. The experts from the Republic of Korea, Germany and the Kingdom of the Netherlands agreed with the main premise of the Russian presentation but cautioned that other parameters in the design of the barrier may need to be updated, such as the stiffness. The expert from Spain asked if there were comparisons with the results from the tests carried out under multiple NCAP schemes, where a higher mass was already being used. The expert from Italy cautioned that even if newer cars were indeed heavier, the existing fleet in his country was significantly lighter than the typical new vehicles. GRSP agreed that this was an important issue that would require more work and decided to continue the discussion in the next session. Interested experts were encouraged to contact the expert from the Russian Federation.