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UN R13: Proposal for a Supplement to the 11 series of amendments
Document GRVA/2021/24
14 July 2021
Introduces requirements for the type approval of Electro-Mechanical Braking (EMB) systems as state-of-the-art braking systems. This document supersedes ECE/TRANS/WP.29/GRVA/2020/21 and informal document GRVA-09-05.
Submitted by CLEPA
Status: Superseded
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Previous Documents, Discussions, and Outcomes
8. (b) | Electromechanical brakes

111. The expert from CLEPA presented GRVA-15-49, informing GRVA on their activities related to drafting provisions for the approval of Electro-Mechanical Brakes (EMB). He mentioned GRVA-15-17, reflecting the current status of their work on the development of an amendment to UN Regulation No. 13.

112. The expert from the United Kingdom of Great Britain and Northern Ireland supported the principle of developing regulatory provisions to bring this technology on the market. He called for more transparency on similar activities for passenger cars and UN Regulation No. 13-H.

113. The expert from CLEPA mentioned OICA’s involvement in these activities. He added that similar activities for passenger cars were indeed in preparation, that exchanges among stakeholders existed to keep definitions aligned. He explained that the systems layout could differ between light and heavy vehicles. He highlighted the complexity of UN Regulation No. 13 compared to UN Regulation No. 13-H.

114. The expert from Germany welcomed the activities and noted the high frequency of meetings on that topic. He suggested that GRVA organize a workshop to review the activities and update the contracting parties not yet involved. The experts from Czech Republic, Denmark, Netherlands and United Kingdom of Great Britain and Northern Ireland expressed interest for such a workshop. The expert from Japan suggested the workshop to be organized as an informal and hybrid meeting.

115. GRVA noted the activities of the Working Party on Pollution and Energy (GRPE) regarding battery durability. GRVA agreed to host an informal workshop on EMB open to all GRVA stakeholders, including contracting parties to the 1958 and 1998 Agreements.

8. (a) | Electronic Stability Control
8. (b) | Electro-mechanical brakes

83. The expert from CLEPA presented GRVA-13-47, reflecting the ongoing discussions regarding the development of provisions for the type approval of electromechanical brakes (see current status in GRVA-13-05, amending ECE/TRANS/WP.29/GRVA/2022/8).

84. The expert from the United Kingdom of Great Britain and Northern Ireland introduced GRVA-13-19 proposing amendments to Annex XVIII on the assessment of complex electronic systems, based on the most recent provisions introduced in UN Regulation No. 157. He recalled that the review of the complex electronic assessment provisions was initiated when introducing Automatically Commanded Steering Functions of categories A and B in UN Regulation No. 79 and that it was agreed at that time, that UN Regulations Nos. 13 and 13-H would need to be updated, too.

85. The expert from OICA inquired the reason why the provisions in UN Regulation No. 157 were used as a reference and why not simpler versions such as the one in UN Regulation No. 79. He recalled that the complexity of systems covered by UN Regulation No. 79 (i.e. Levels 0 to 2) differed from those in UN Regulation No. 157 (i.e. Level 3). He stated that the assessment for a power steering, an anti-lock braking system or an electronic stability function would not necessarily need to be as extensive as for ALKS.

86. The expert from CLEPA supported that Annex XVIII is updated in the context of the activities related to electro-mechanical brakes.

87. GRVA noted CLEPA’s intention to submit an official document, on the basis of GRVA-13-05 for consideration at the September 2022 session of GRVA. GRVA noted the proposal by United Kingdom of Great Britain and Northern Ireland to upgrade Annex XVIII of UN Regulation No. 13 and discussed whether or not to merge it with CLEPA’s document, mentioned above.

8. (c) | Clarifications
8. (b) | Electromechanical Brakes

80. GRVA noted the oral report of the expert from CLEPA concerning ongoing discussions regarding electromechanical brakes (ECE/TRANS/WP.29/GRVA/2022/8) and agreed to consider a revised document at its May 2022 session.

8. (b) | Electromechanical Brakes

87. The expert from CLEPA briefly introduced ECE/TRANS/WP.29/GRVA/2020/24. He explained that his organization invited GRVA participants to participate in an informal meeting that took place before the GRVA session and that CLEPA received some suggestions and comments from Contracting Parties that his members wanted to address.

88. GRVA agreed to review a revised proposal at its next session.

8. (b) | Electromechanical Brakes

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.

8. (c) | Clarifications
8. (b) | Modular Vehicle Combinations
8. (c) | Clarifications

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. 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.

Related and Previous Documents
Relates to EMB | UN R13 |