86. The representative of CITA recalled the adoption by GRVA of technical provisions for the approval of Electrical Transmission Braking System (ETBS) in June 2024 and the ongoing discussion on braking performance testing of these systems for heavy vehicles at the time of Periodic Technical Inspection (GRVA-19-14/Rev.1, GRVA-19-16, GRVA-19-17). He recalled the importance of testing brakes at PTI and the existing methods. He presented considerations regarding reference braking forces using vehicle interface compared to using an On-Board Diagnostic (OBD) plug.
87. The representative of OICA inquired why industry should harmonize the communication standards via OBD, which would only serve the purpose of some tooling companies in a limited number of countries. He recalled that some countries did not use reference values for PTI.
88. The representative of Germany supported the CITA proposal to use the OBD plug as a quick fix. The representative of Denmark inquired whether this measurement equipment was required as per the European Union directive 2014/45. The representative of Spain recalled the technical reason explaining the need for reference values and the provisions for the periodic technical inspection of braking systems in UN Regulation No. 13. The representatives of the Netherlands, Sweden, and the United Kingdom of Great Britain and Northern Ireland supported further discussion of this topic by GRVA without further delay.
89. GRVA agreed to keep GRVA-20-39 and GRVA-19-17 on the next session’s agenda.