Revision 2 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following changes:

Revision 2 | Amendment 1 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Revision 2 | Amendment 2 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Revision 2 | Amendment 3 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Revision 2 | Corrigendum 1 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Revision 2 | Corrigendum 2 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Revision 2 | Corrigendum 3 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Revision 3 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2013/57. This document incorporates the following changes:

Text based upon a proposal from CLEPA and OICA as adopted by the Working Party on Brakes and Running Gear (GRRF) at its 74th session to harmonize UN R13-H with the Federal Motor Vehicle Safety Standard (FMVSS) 135 on electric vehicle requirements with regard to the regenerative braking system (RBS).

Revision 3 | Amendment 1 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2014/46/Rev.1. This document incorporates the following change:

Proposal to clarify and update transitional provisions, including provisions for extensions of type approvals granted according to the antecedent requirements of the original approval. These amendments also relate to the transfer of brake-related telltale provisions to UN R121.

Revision 3 | Amendment 2 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2016/50. This document incorporates the following change:

Proposal to delete provisions for electronic stability and brake-assist systems from UN R13-H as part of their transposition into new stand-alone regulations. This proposal also clarifies the requirements on electromagnetic compatibility via reference to Regulation No. 10.

Revision 3 | Amendment 3 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2018/8. This document incorporates the following change:

Proposal to enable activation of the ESC optical symbol in cases of a corrective steering function intervention when the CSF intervention is activated under the control of an ESC system. The aim is to avoid separate requirements for brake-actuated and steering-actuated vehicle stability functions (VSF) that would lead to two optical warnings where only one is necessary. This would enable use of the ESC intervention tell-tale for CSF steering intervention.

Revision 4 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2016/50. This document incorporates the following change:

Proposal to delete provisions for electronic stability and brake-assist systems from UN R13-H as part of their transposition into new stand-alone regulations. This proposal also clarifies the requirements on electromagnetic compatibility via reference to Regulation No. 10.

Revision 4 | Amendment 1 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2018/54. This document incorporates the following change:

Revision 4 | Amendment 2 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2021/13. This document incorporates the following change:

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

Revision 4 | Amendment 3 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2021/73. This document incorporates the following change:

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

Revision 4 | Amendment 4 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2022/79. This document incorporates the following change:

Proposal from GRVA to clarify paragraph 5.2.22.2. with regard to the deceleration thresholds for generating the braking light signal in the case of regenerative braking and/or automatically commanded braking.