Proposal to clarify the provisions in Annex 3, para. 1.5.3.1. in the case where the batteries have been recharged or replaced with a charged set between the hot performance and recovery procedure such that the linings temperature is no longer at the requisite temperature.

64. The expert from France introduced ECE/TRANS/WP.29/GRVA/2020/20, aimed at clarifying the provisions in Annex 3, para. 1.5.3.1., in case the batteries have been recharged or replaced with a charged set, between the hot performance and recovery procedure, when the linings temperature is no longer at the temperature. GRVA adopted it and requested the secretariat to submit it as supplement to the 01 series of amendments to UN Regulation No. 13-H for consideration and vote by WP.29 and AC.1 at their March 2021 sessions.

65. The expert from CLEPA presented GRVA-07-68, introducing ECE/TRANS/WP.29/GRVA/2020/21 with provisions for the type approval of Electromechanical Braking systems. The expert from OICA introduced GRVA-07-46, aimed at improving and finalizing some open items in the CLEPA proposal. The expert from the Netherlands stated that some open items should still be finalized before adoption, such as para. 5.1.1.2. and should address the deterioration over time of the state of charge and the state of health. He also mentioned issues related to temperature differences during a trip that might impact the performance of the system. GRVA agreed to resume consideration of this matter at its next session.

65. The expert from CLEPA presented GRVA-07-68, introducing ECE/TRANS/WP.29/GRVA/2020/21 with provisions for the type approval of Electromechanical Braking systems. The expert from OICA introduced GRVA-07-46, aimed at improving and finalizing some open items in the CLEPA proposal. The expert from the Netherlands stated that some open items should still be finalized before adoption, such as para. 5.1.1.2. and should address the deterioration over time of the state of charge and the state of health. He also mentioned issues related to temperature differences during a trip that might impact the performance of the system. GRVA agreed to resume consideration of this matter at its next session.

Proposal to introduce requirements for the type approval of Electro-Mechanical Braking (EMB) systems.

65. The expert from CLEPA presented GRVA-07-68, introducing ECE/TRANS/WP.29/GRVA/2020/21 with provisions for the type approval of Electromechanical Braking systems. The expert from OICA introduced GRVA-07-46, aimed at improving and finalizing some open items in the CLEPA proposal. The expert from the Netherlands stated that some open items should still be finalized before adoption, such as para. 5.1.1.2. and should address the deterioration over time of the state of charge and the state of health. He also mentioned issues related to temperature differences during a trip that might impact the performance of the system. GRVA agreed to resume consideration of this matter at its next session.

98. The expert from CLEPA presented GRVA-09-06, introducing ECE/TRANS/WP.29/GRVA/2020/21, as amended by GRVA-09-05, providing provisions for the type approval of trucks equipped with electromechanical brakes. He clarified that no trailer with electromechanical brakes was considered in the proposal. He explained the benefits of such system for hybrid electric and electric vehicles. He acknowledged that further work was needed to develop Periodic Technical Inspection and electric storage devices requirements.

99. GRVA agreed to review a revised proposal based on GRVA-09-05, as formal document, at its next session.

GRVA agreed to resume consideration of this agenda item dealing with Electro-Mechanical Brakes at its September 2021 session.

96. The expert from CLEPA updated GRVA (GRVA-14-52) on the outcome achieved following the weekly meetings organized by CLEPA since February 2022, with both industry group representatives and contracting parties regarding the drafting of provisions for the approval of Electromechanical Brakes (EMB) for electric powered trucks and coaches. EMB was presented for the first time to GRVA at the seventh session of GRVA (see ECE/TRANS/WP.29/GRVA/2020/21). The original proposal has been iteratively updated following GRVA guidance (see ECE/TRANS/WP.29/GRVA/2021/24, ECE/TRANS/WP.29/GRVA/2022/8 and GRVA-13-05). He presented the recent developments related to the effect of aging of the electrical energy storage device. He presented GRVA-14-12, the most recent draft superseding GRVA-13-05. He kindly invited interested contracting parties to join their activities.

97. GRVA noted the presentation of the expert from CLEPA on EMB and their ambition to submit an amendment proposal to UN Regulation No. 13, based on GRVA-14-12, for consideration at the next session.

Presentation regarding requirements for stop lamp illumination with regard to various types of braking systems, including those of electric vehicles.

66. GRVA agreed to defer consideration of ECE/TRANS/WP.29/GRVA/2020/31 and GRVA-07-48 on stop lights illumination at its next session.

Proposal to improve the uniformity of requirements for stop lamp illumination with regard to various types of braking systems, including those of electric vehicles.

66. GRVA agreed to defer consideration of ECE/TRANS/WP.29/GRVA/2020/31 and GRVA-07-48 on stop lights illumination at its next session.

GRVA adopted ECE/TRANS/WP.29/GRVA/2020/31 and requested the secretariat to submit it as draft supplement to the 01 series of amendments to UN Regulation No. 13-H, for consideration and vote by WP.29 and AC.1 at their June 2021 sessions.

Proposal to correct requirements for type-IIA (endurance braking performance) tests.

67. The expert from Poland introduced GRVA-07-67 proposing correction to the table in para. 2.1.1. of Annex 4 in Regulation No. 13. GRVA requested the secretariat to distribute the document with an official symbol at the February 2021 session of GRVA.

68. The expert from Germany introduced ECE/TRANS/WP.29/GRVA/2020/36 proposing amendments to the endurance braking requirements, addressing concerns related to electric vehicles. The expert from OICA withdrew ECE/TRANS/WP.29/GRVA/2020/37 and worked on ECE/TRANS/WP.29/GRVA/2020/36. He presented GRVA-07-75, introducing GRVA-07-73-Rev.1, superseding GRVA-07-47 and incorporating GRVA-07-05, submitted by the expert from the Czech Republic.

69. GRVA adopted ECE/TRANS/WP.29/GRVA/2020/36 as amended by GRVA-07-73-Rev.1 (Annex XI of the session report) and requested the secretariat to submit it as supplement to the 11 series of amendments to UN Regulation No. 13 for consideration and vote by WP.29 and AC.1 at their March 2021 sessions.

68. The expert from Germany introduced ECE/TRANS/WP.29/GRVA/2020/36 proposing amendments to the endurance braking requirements, addressing concerns related to electric vehicles. The expert from OICA withdrew ECE/TRANS/WP.29/GRVA/2020/37 and worked on ECE/TRANS/WP.29/GRVA/2020/36. He presented GRVA-07-75, introducing GRVA-07-73-Rev.1, superseding GRVA-07-47 and incorporating GRVA-07-05, submitted by the expert from the Czech Republic.

69. GRVA adopted ECE/TRANS/WP.29/GRVA/2020/36 as amended by GRVA-07-73-Rev.1 (Annex XI of the session report) and requested the secretariat to submit it as supplement to the 11 series of amendments to UN Regulation No. 13 for consideration and vote by WP.29 and AC.1 at their March 2021 sessions.

Proposal including amendments submitted in GRVA-07-05 and superseding document GRVA-07-47.

68. The expert from Germany introduced ECE/TRANS/WP.29/GRVA/2020/36 proposing amendments to the endurance braking requirements, addressing concerns related to electric vehicles. The expert from OICA withdrew ECE/TRANS/WP.29/GRVA/2020/37 and worked on ECE/TRANS/WP.29/GRVA/2020/36. He presented GRVA-07-75, introducing GRVA-07-73-Rev.1, superseding GRVA-07-47 and incorporating GRVA-07-05, submitted by the expert from the Czech Republic.

69. GRVA adopted ECE/TRANS/WP.29/GRVA/2020/36 as amended by GRVA-07-73-Rev.1 (Annex XI of the session report) and requested the secretariat to submit it as supplement to the 11 series of amendments to UN Regulation No. 13 for consideration and vote by WP.29 and AC.1 at their March 2021 sessions.

Presentation concerning requirements related to electric regenerative endurance braking systems.

68. The expert from Germany introduced ECE/TRANS/WP.29/GRVA/2020/36 proposing amendments to the endurance braking requirements, addressing concerns related to electric vehicles. The expert from OICA withdrew ECE/TRANS/WP.29/GRVA/2020/37 and worked on ECE/TRANS/WP.29/GRVA/2020/36. He presented GRVA-07-75, introducing GRVA-07-73-Rev.1, superseding GRVA-07-47 and incorporating GRVA-07-05, submitted by the expert from the Czech Republic.

69. GRVA adopted ECE/TRANS/WP.29/GRVA/2020/36 as amended by GRVA-07-73-Rev.1 (Annex XI of the session report) and requested the secretariat to submit it as supplement to the 11 series of amendments to UN Regulation No. 13 for consideration and vote by WP.29 and AC.1 at their March 2021 sessions.

Proposal to introduce requirements for endurance braking systems for vehicles equipped with an electric regenerative endurance braking system. This proposal is an alternative to the text proposed in document GRVA/2020/37.

68. The expert from Germany introduced ECE/TRANS/WP.29/GRVA/2020/36 proposing amendments to the endurance braking requirements, addressing concerns related to electric vehicles. The expert from OICA withdrew ECE/TRANS/WP.29/GRVA/2020/37 and worked on ECE/TRANS/WP.29/GRVA/2020/36. He presented GRVA-07-75, introducing GRVA-07-73-Rev.1, superseding GRVA-07-47 and incorporating GRVA-07-05, submitted by the expert from the Czech Republic.

69. GRVA adopted ECE/TRANS/WP.29/GRVA/2020/36 as amended by GRVA-07-73-Rev.1 (Annex XI of the session report) and requested the secretariat to submit it as supplement to the 11 series of amendments to UN Regulation No. 13 for consideration and vote by WP.29 and AC.1 at their March 2021 sessions.

Proposal to introduce requirements for endurance braking systems for vehicles equipped with an electric regenerative endurance braking system.

68. The expert from Germany introduced ECE/TRANS/WP.29/GRVA/2020/36 proposing amendments to the endurance braking requirements, addressing concerns related to electric vehicles. The expert from OICA withdrew ECE/TRANS/WP.29/GRVA/2020/37 and worked on ECE/TRANS/WP.29/GRVA/2020/36. He presented GRVA-07-75, introducing GRVA-07-73-Rev.1, superseding GRVA-07-47 and incorporating GRVA-07-05, submitted by the expert from the Czech Republic.

69. GRVA adopted ECE/TRANS/WP.29/GRVA/2020/36 as amended by GRVA-07-73-Rev.1 (Annex XI of the session report) and requested the secretariat to submit it as supplement to the 11 series of amendments to UN Regulation No. 13 for consideration and vote by WP.29 and AC.1 at their March 2021 sessions.