Proposal to clarify and improve the belt routing and positioning of the universal child restraint system seat fixture during testing.

The provisions of UN Regulation No. 16 (paragraph 6.4.1.4.1.) only allow contact of the chest of the dummy driver with the steering assembly, provided that this contact fulfils certain energy-dissipation test requirements and that contact does not occur at a speed higher than 24 km/h. In response to the updated provisions of UN Regulation No. 16 which allow greater forward displacement of occupants, UN Regulation No. 17 will be updated to provide requirements on improved energy-dissipation criteria for those areas of the rear of seats and head restraints where impact of the head of the rear occupant may occur. Given the update to UN R17, this proposal would amend the scope of UN R25 (which has not been updated with regard to energy dissipation) to cover only vehicle categories M2 < 3.5 tons and N1 and mention explicitly that application to N2 and N3 vehicle categories is optional.

In response to proposals to allow greater forward displacement of occupants under UN R16 and the resulting changes in impact energy-dissipation criteria under UN R17, UN R25 (with regard to head restraints) is also subject to change. This proposal would accordingly update a reference in UN R80 to UN R25.

Proposal to expand the application area of the energy absorption criteria for seating in order to facilitate the optimization of seat-belt load limiters by allowing limited occupant contact with these seat areas.

Changes to NCAP testing oblige the use of load limiters on safety-belts with lower threshold values that yield less thorax compression but also allow for greater forward displacement of the occupants. To address the greater forward displacement of rear occupants, UN R17 is under revision to require more stringent energy dissipation performance for those areas of the rear of seats (including the head restraints and parts mounted on the seat) where the head of the rear occupant may come into contact. UN R21 allows for alternative testing of the rear parts of seats (paras. 5.7-5.7.3. ) However, in light of the changes to UN R17, this alternative approach is no longer valid. This proposal would delete the alternate method and expands the scope of UN R21 to include testing of any parts mounted on the seats.

Schedule 4 of the draft revision 3 of the 1958 Agreement concerns the type approval numbering system for UN approvals. The numbering example reads: E11*83R03/00J*2439*01. In its second section it contains the letter J for indicating implementing stage J of UN Regulation 83. According to Schedule 4, point 2, under ©, that letter J should be preceded by a slash; however that slash is missing in the given example. It is suggested to correct this typing error by replacing the relevant example by the following example: E11*83R03/00/J*2439*01.

Dutch discussion paper arguing that the DETA system unique identifier should not be mandatory under IWVTA.

Proposal to clarify the wording of the type approval communication form.