UN R39: Proposal for Supplement 2 to the 01 Series of amendments
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UN R39 allows for odometer units in miles. This proposal would clarify requirements for systems that can switch the odometer units between kilometers and miles to ensure that only one unit of measurement for total distance is used at a time.

Reference Number: GRSG/2021/7
Origin: France
Date: 29 January 2021
Proposal Status: Formal GR review
Related Documents:
GRSG-119-12 | UN R39: Suggestion for an amendment
GRSG-121-35 | UN R39: Proposal for amendments to document GRSG/2021/17
Discussion(s):
Working Party on General Safety | Session 121 | 12-16 Apr 2021

50. The expert from France introduced the proposal for amendments to UN Regulation No. 39 (ECE/TRANS/WP.29/GRSG/2021/7), providing for the possibility for drivers to switch the odometer value from kilometres to miles and vice-versa.

51. The expert from OICA introduced document GRSG-121-21, proposing amendments to the proposal of France for amendments to UN Regulation No. 39 (ECE/TRANS/WP.29/GRSG/2021/7) and document GRSG-121-20 elaborating the rationale for the proposal contained in document GRSG-121-21.

52. The expert from the United Kingdom of Great Britain and Northern Ireland introduced document GRSG-121-29, also proposing amendments to the proposal of France for amendments to UN Regulation No. 39 (ECE/TRANS/WP.29/GRSG/2021/7).

53. The expert from France introduced GRSG-121-35, the consolidated proposal for amendments to UN Regulation No. 39, based on ECE/TRANS/WP.29/GRSG/2021/7, GRSG-121-21 and GRSG-121-29, submitted jointly by France, the United Kingdom of Great Britain and Northern Ireland and OICA.

54. GRSG considered and discussed documents proposing amendments to UN Regulation No. 39 (ECE/TRANS/WP.29/GRSG/2021/7, GRSG-121-21, 29 and 35), and upon comments delivered by experts from Canada, Finland, France, Japan, the Netherlands, United Kingdom of Great Britain and Northern Ireland, the European Commission, IMMA and OICA, decided to resume consideration of the proposal based on an updated version, with the aim of including L category vehicles, at the October 2021 session of GRSG. GRSG invited interested parties to work towards developing the proposal based on the draft contained in document GRSG-121-35.