What does it cover?
UN R173 addresses installation of safety-belts and restraint systems in the vehicles within its scope. Installation of child restraints and ISOFIX systems in M1 and N1 vehicles is also covered. Seating direction, vehicle category and manufacturer-requested extensions are read together.
Who is it for?
For vehicle manufacturers, suppliers developing the relevant systems and test or approval teams.
Which subjects are addressed?
- Safety-belt and restraint installation
- Child restraint and ISOFIX installation
- Vehicle category and seating direction
Common question
Does an approved belt or child seat establish compliance of the installation?
No. Product approval and installation in the vehicle are separate subjects. R173 explains requirements concerning the vehicle 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: R173 — UN Regulation No. 173
Working series: 01 · Included supplement: 1
RegsUP edition publication date:
This is the RegsUP publication decision date, not the date the regulation entered into force.