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ECE R-39
Speedometer and Odometer Equipment
Applies to
M, N, L
Topic
ADAS & vision
Framework
UN ECE
Velocert services
European · Series · Individual
Overview
UN Regulation No 39 lays down uniform provisions for the approval of vehicles with regard to the speedometer and odometer equipment, including its installation. Its annexes cover the speedometer accuracy test for conformity of production and the odometer accuracy test.
Current series: 02 series, Supplement 1 (in force 30 September 2026); this summary is based on the version published on EUR-Lex, 02 series (2025). GlobalAutoRegs also lists Supplement 2 to the 02 series with no entry-into-force date. Checked on GlobalAutoRegs, 1 November 2026. For the current text, see the UN (UNECE) page.
Scope
It applies to the approval of vehicles of categories L, M and N.
The regulation applies to the following vehicle categories:
M
Passenger vehicles
N
Goods vehicles
L
Two- and three-wheelers, quadricycles
Official source
For the requirements of this regulation, refer to the official text in force and its amendments.
Official UNECE text