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Document Title UN R17: Proposal for Supplement 1 to the 10 series of amendments
Reference Number GRSP/2020/12
Date
28 Sep 2020
Summary Proposal to clarify the test procedure for the height of head restraints in the case of vehicles having a low roof construction.
Source(s) OICA
Rulemaking Area(s) UN R17 Strength of Seats
Proposal Status Withdrawn
Meeting(s)
Related Documents
WP.29/2020/106 UN R17: Proposal for the 10 series of amendments (adopted)
GRSP-67-28 UN R17: Proposal for amendments (superseded)
GRSP/2020/8 UN R17: Proposal for the 10 series of amendments (superseded)
GRSP-68-31/Rev.1 Test procedure for the height of head restraints in the case of vehicles having a low roof construction
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Excerpts from session reports related to this document
GRSP | Session 68 | 7-11 Dec 2020

11. The expert from OICA introduced ECE/TRANS/WP.29/GRSP/2020/12 to clarify the test procedure for the height of head restraints in the case of vehicles having a low roof construction. He added that the current provisions were design restrictive and that the proposal was addressing only integrated head restraints. However, the expert from Japan expressed the following concerns through a presentation (GRSP-68-31-Rev.1) to the proposal:

  1. The range of exempted vehicles addressed exemption applicable to bucket-type seats. However, considerations from the expert from Japan shows that this exemption could be applied to any integrated headrest seat. Therefore, not only sport-vehicles but also vehicles with high hoods and low roofs (e.g., low roof sedans, high and/or long hood vehicles and SUVs) would be exempted at manufacturer’s choice.
  2. Safety risk to tall occupants. Specifically, in the case of an occupant taller than the average, the safety level of the occupant in the event of a collision would likely decrease.

12. The expert from OICA further argued that the proposal would guarantee safety performances since all other static requirements would remain in place and by foreseeing dynamic tests in case of application of this exemption provision. He reminded GRSP that the current provisions required a lower limit of the head restraint height to guarantee the safety performance of taller passengers. The expert from the Netherlands and Germany requested a time reservation to ECE/TRANS/WP.29/GRSP/2020/12. Finally, GRSP agreed to resume discussion on this subject at its May 2021 session.

11. The expert from OICA introduced ECE/TRANS/WP.29/GRSP/2020/12 to clarify the test procedure for the height of head restraints in the case of vehicles having a low roof construction. He added that the current provisions were design restrictive and that the proposal was addressing only integrated head restraints. However, the expert from Japan expressed the following concerns through a presentation (GRSP-68-31-Rev.1) to the proposal:

  1. The range of exempted vehicles addressed exemption applicable to bucket-type seats. However, considerations from the expert from Japan shows that this exemption could be applied to any integrated headrest seat. Therefore, not only sport-vehicles but also vehicles with high hoods and low roofs (e.g., low roof sedans, high and/or long hood vehicles and SUVs) would be exempted at manufacturer’s choice.
  2. Safety risk to tall occupants. Specifically, in the case of an occupant taller than the average, the safety level of the occupant in the event of a collision would likely decrease.

12. The expert from OICA further argued that the proposal would guarantee safety performances since all other static requirements would remain in place and by foreseeing dynamic tests in case of application of this exemption provision. He reminded GRSP that the current provisions required a lower limit of the head restraint height to guarantee the safety performance of taller passengers. The expert from the Netherlands and Germany requested a time reservation to ECE/TRANS/WP.29/GRSP/2020/12. Finally, GRSP agreed to resume discussion on this subject at its May 2021 session.