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ECE R-135
Pole Side Impact Performance (PSI)
Applies to
M, N
Topic
Occupant safety
Framework
UN ECE
Velocert services
European
Overview
UN Regulation No 135 lays down uniform provisions for the approval of vehicles with regard to their Pole Side Impact performance (PSI). Its annexes cover the dynamic pole side impact test procedure, the installation and performance criteria of the WorldSID dummy, and post-crash hydrogen fuel system integrity.
Current series: 02 series, Supplement 3 (in force 12 June 2025); this summary is based on the version published on EUR-Lex, 01 series, Supplement 2 (2020). GlobalAutoRegs also lists Supplement 4 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 category M1 vehicles with a gross vehicle mass of up to 3 500 kg and to category N1 vehicles that meet the geometric conditions set out in the Regulation. Other category M and N vehicles with a gross vehicle mass of up to 4 500 kg may also be approved at the manufacturer's request.
The regulation applies to the following vehicle categories:
M
Passenger vehicles
N
Goods vehicles
Official source
For the requirements of this regulation, refer to the official text in force and its amendments.
Official UNECE text