Proposal to redefine the measurement criteria for determining appropriate seat spacing in order to address observed cases where adequate spacing is not achieved even though the current criteria are fulfilled. The type approval authorities of the member states of the European Union (TAAM) discussed the proper interpretation of the text of the Regulation in the case of seats with a central recess (sunken area) and decided that the text of the Regulation needed to be modified in order to provide an adequate method to measure the H dimension.

Proposal to redefine the measurement criteria for determining appropriate seat spacing in order to address observed cases where adequate spacing is not achieved even though the current criteria are fulfilled. The type approval authorities of the member states of the European Union (TAAM) discussed the proper interpretation of the text of the Regulation in the case of seats with a central recess (sunken area) and decided that the text of the Regulation needed to be modified in order to provide an adequate method to measure the H dimension.

Revised approach to resolving the issues raised in Romania’s proposal GRSG/2015/21 to redefine the measurement criteria for determining appropriate seat spacing. This proposal has been developed collaboratively by Romania, OICA, and CCLCR with respect to discussions held by the type approval authorities of the member states of the European Union (TAAM). The proposal includes the use of a new testing gauge for the H dimension measurement.