UN Regulation No. 63: Two-wheeled Moped Noise

Uniform Provisions Concerning the Approval of Two-wheeled Mopeds with regard to Noise

Related groups: GRB and GRBP
UN R63 | Amendment 2 (2006)
14 Nov 2006 2017-01-04 12:04:42 UTC 2 01 series of amendments | Supplement 1
UN R63 | Revision 1 | Amendment 1 (2016)
5 Feb 2016 2016-02-10 11:56:09 UTC 1 1 02 series of amendments | Supplement 1 Based upon the adopted proposal: WP.29/2015/64

Proposal to update the reference to the latest version of ISO 10844 and to introduce transitional provisions for the shift of the test track requirements from ISO 10844: 1994 to ISO 10844: 2014.

UN R63 | Revision 1 | Amendment 2 (2017)
22 Feb 2017 2017-05-31 17:27:51 UTC 1 2 02 series of amendments | Supplement 2 Based upon the adopted proposal: WP.29/2016/47

Proposal to clarify that conditioning of a silencing system is necessary only in cases where exhaust gases come into contact with silencer fibrous materials.

UN R63 | Revision 1 | Amendment 3 (2017)
6 Dec 2017 2017-12-19 15:33:47 UTC 1 3 02 series of amendments | Supplement 3 Based upon the adopted proposal: WP.29/2017/4

Based on the outcomes of a European Commission study, proposal to clarify the text and align its provisions with other vehicle sound regulations, especially UN R41, including to replace references to “two wheeled moped” with the term “L1 category vehicles” (and consequently to replace references to “moped” with “vehicle”) and to replace the term “noise” with “sound” (except for references to background noise) throughout the regulation. It proposes improved terminology and definitions, including new ones, improved sound emission testing conditions and procedures. It also introduces sound emission measurement through new testing of in use vehicles in motion.

UN R63 | Revision 1 | Amendment 4 (2019)
16 Jan 2019 2019-01-25 11:08:52 UTC 1 4 02 series of amendments | Supplement 4 Based upon the adopted proposal: WP.29/2018/62

Proposal to exclude pure electric vehicles, including vehicles with auxiliary electric propulsion, from the scope of the regulation, to include sound-level measurement conditions for powered cycles equipped with compressed air engine and to introduce sound-level limits for powered cycles.

UN R63: Revision 1 (2013)
2 Dec 2013 2013-12-12 15:59:11 UTC 02 series of amendments 01 series of amendments | Supplement 1 01 series of amendments | Corrigendum 2 01 series of amendments
Earlier texts may be available through the UN Official Document System.