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UN R165 — Audible reverse warning systems

Read device approval together with automatic operation on the vehicle.

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What does it cover?

UN R165 regulates audible reverse warning devices for the buses and goods vehicles within its scope. Device approval and vehicle installation with automatic activation when reverse is selected are separate parts. Fixed-level and self-adjusting warning devices are distinguished.

Who is it for?

For vehicle manufacturers, suppliers developing the relevant systems and test or approval teams.

Which subjects are addressed?

  • Reverse warning device approval
  • Automatic activation on the vehicle
  • Fixed-level and self-adjusting sound systems

Common question

Does R165 only assess the sound of a reversing alarm?

No. It separately addresses device requirements and installation and automatic operation on the relevant vehicles. Device approval alone does not establish compliance of the complete installation.

Published RegsUP edition

This page is tied to the published RegsUP working edition below; it is not an official consolidated text.

RegsUP record title: R165 — UN Regulation No. 165

Working series: 00 · Included supplement: 0

RegsUP edition publication date:

This is the RegsUP publication decision date, not the date the regulation entered into force.

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