UN R78 | Revision 1 (2007)
20 Jul 2007 2011-01-28 11:26:13 UTC 1 03 series of amendments 02 series of amendments | Supplement 3 02 series of amendments | Supplement 2 02 series of amendments | Supplement 1 02 series of amendments 01 series of amendments | Corrigendum 1 01 series of amendments
UN R78 | Revision 1 | Amendment 1 (2009)
16 Apr 2009 2011-01-28 11:38:27 UTC 1 1 03 series of amendments | Supplement 1
UN R78 | Revision 1 | Corrigendum 1 (2008)
11 Jan 2008 2011-01-28 11:39:17 UTC 1 1
UN R78 | Revision 1 | Corrigendum 2 (2008)
24 Jun 2008 2011-01-28 11:40:13 UTC 1 2 03 series of amendments | Corrigendum 1
UN R78 | Revision 1 | Corrigendum 3 (2010)
27 Oct 2010 2011-01-28 11:41:17 UTC 1 3 03 series of amendments | Corrigendum 2
UN R78 | Revision 1 | Amendment 2 (2015)
9 Nov 2015 2015-11-26 16:57:55 UTC 1 2 03 series of amendments | Supplement 2 Based upon the adopted proposal: WP.29/2015/9

Proposal as approved by the GRRF to clarify provisions on the use of Combined Braking Systems (CBS) and make some additional editorial improvements.

UN R78 | Revision 1 | Amendment 3 (2017)
22 Feb 2017 2017-05-31 17:21:18 UTC 1 3 03 series of amendments | Supplement 3 Based upon the adopted proposals: WP.29/2016/56

Proposal to include three-wheeled category L vehicles within the scope of ABS testing, to align UN R78 with the provisions for anti-lock braking systems used in other regulations, including specific exemptions for certain off-road vehicles as incorporated in UN Regulation No. 13, and to allow for Emergency Stop Signal (ESS) systems on motorcycles and related vehicles. The proposal also clarifies the limits on the use of any temporary ABS deactivation switch and prohibition against permanent disabling of ABS if fitted on a motorcycle.

WP.29-169-03
UN R78 | Revision 1 | Amendment 4 (2017)
26 Jul 2017 2017-09-08 11:11:13 UTC 1 4 04 series of amendments Based upon the adopted proposals: WP.29/2016/114

Proposal to align the text with the provisions for anti-lock braking systems used in other regulations, including specific exemptions for certain off-road vehicles as incorporated in UN Regulation No. 13. The proposal clarifies the limits on the use of any temporary ABS deactivation switch and prohibition against permanent disabling of ABS if fitted on a motorcycle.

WP.29-170-06

Proposal from GRRF to correct document WP.29/2016/114 (proposal to align UN R78 with other braking regulations as regards anti-lock braking systems and to clarify the limits on the use of any temporary ABS deactivation switch and prohibition against permanent disabling of ABS if fitted on a motorcycle. Under (e), the correct reference to the paragraph GTR No. 3 should read 5.1.13. The correct reference under f) to the previous points should be (a) to (e) instead of (a) to (f).

UN R78 | Revision 2 (2018)
22 May 2018 2021-02-01 16:40:16 UTC 2 04 series of amendments Based upon the adopted proposals: WP.29/2016/114

Proposal to align the text with the provisions for anti-lock braking systems used in other regulations, including specific exemptions for certain off-road vehicles as incorporated in UN Regulation No. 13. The proposal clarifies the limits on the use of any temporary ABS deactivation switch and prohibition against permanent disabling of ABS if fitted on a motorcycle.

WP.29-170-06

Proposal from GRRF to correct document WP.29/2016/114 (proposal to align UN R78 with other braking regulations as regards anti-lock braking systems and to clarify the limits on the use of any temporary ABS deactivation switch and prohibition against permanent disabling of ABS if fitted on a motorcycle. Under (e), the correct reference to the paragraph GTR No. 3 should read 5.1.13. The correct reference under f) to the previous points should be (a) to (e) instead of (a) to (f).

UN R78 | Revision 2 | Amendment 1 (2020)
7 Jan 2020 2021-02-01 16:42:08 UTC 2 1 04 series of amendments | Supplement 1 Based upon the adopted proposal: WP.29/2019/46

Proposal to introduce provisions relevant to the activation of stop lamps under more conditions than application of the service brake only, e.g. also by regenerative braking.

UN R78 | Revision 2 | Amendment 2 (2021)
2 Feb 2021 2021-02-25 15:08:31 UTC 2 2 05 series of amendments Based upon the adopted proposal: WP.29/2020/65

Proposal to harmonise the requirements of UN R78 with the latest amendments to UN GTR No. 3 adopted by GRVA at its fourth session. Paragraph 5.1.18 aims to clarify with an explicit article that the rider is duly informed when activating a riding mode that disables the ABS on the rear axle.

Earlier texts may be available through the UN Official Document System.