UN R39 Supplement 2 (01 series) · UNECE Regulation No. 39 (ECE R39) — Uniform provisions concerning the approval of vehicles with regard to the speedometer and odometer equipment including its installation.
UN R39 — Supplement 2 to the 01 series of amendments
Supplement 1 → 2
- What changed
- New paragraph 5.5.2. requires the odometer to display the distance in the unit of the predominant speedometer scale.
- If a setting lets the driver select km or miles for the odometer independently of the speedometer, the odometer must identify the unit used.
- Why
- The proposal intends that each odometer value shows its unit, whether the odometer is in km or miles.
- The proposal aims to clarify the specification and to require the units for odometers.
Q1What changed1 change
Unit of the odometer display (para. 5.5.2.)
New paragraph 5.5.2. requires the odometer to display the distance in the unit of the predominant speedometer scale. If a setting lets the driver select km or miles for the odometer independently of the speedometer, the odometer must identify the unit used.
Q2Why it changed
- Proposed by
- Experts from France, the United Kingdom, the International Motorcycle Manufacturers Association (IMMA) and the International Organization of Motor Vehicle Manufacturers (OICA)
- Working party
- GRSG, 122nd session (October 2021)
Reasons
The proposal intends that each odometer value shows its unit, whether the odometer is in km or miles. New paragraph 5.5.2. covers this intention.
Source
“The intention of this proposal is that the unit must be provided with each odometer value no matter whether the odometer is in km or miles, which is covered by the “new” paragraph 5.5.2.”
The proposal aims to clarify the specification and to require the units for odometers.
Source
“a proposal for supplement 2 to the 01 series of amendments of the UN Regulation No. 39 (Speedometer and Odometer) to clarify the specification and requiring the units for odometers”
Document trail
- 2021-09ProposalECE/TRANS/WP.29/GRSG/2021/20/Rev.1Proposal by France, the United Kingdom, IMMA and OICA
- —Working party adoptsECE/TRANS/WP.29/GRSG/101Session report, para. 56
- 2021-12Sent to WP.29ECE/TRANS/WP.29/2022/21Text that GRSG sent to WP.29 and AC.1
- 2022-03WP.29 adoptsECE/TRANS/WP.29/1164Adopted at the 186th session (session report, para. 132)
- 2022-10-08In forceC.N.332.2022.TREATIES-XI.B.16.39UN depositary notification
Q3Who is affected
Vehicle manufacturer
- Make sure that the odometer displays the distance in the unit of the predominant speedometer scale (para. 5.5.2.).
- If the driver can select km or miles for the odometer independently of the speedometer, show the unit used.
- Update your documents that describe the odometer display to match paragraph 5.5.2.
Component supplier
- If your display lets the driver select the odometer unit independently of the speedometer, show the unit used.
- Give the vehicle manufacturer updated odometer display documents for paragraph 5.5.2.
Technical service / Approval authority
- Check that the odometer shows distance in the unit of the predominant speedometer scale (para. 5.5.2.).
- Where the driver can select the odometer unit independently of the speedometer, check that the odometer identifies the unit used.
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ⓘ This report gives advice only. It is not legal or type-approval advice.