What does it cover?
The UN R179 working text addresses brake emissions measurement related to M1 and N1 vehicles using friction braking. Brake dynamometer settings, test setup, particle measurement and calculation of results are defined together. Engine exhaust and brake wear are different emission sources.
Who is it for?
For vehicle, engine and powertrain manufacturers and measurement, testing and approval teams.
Which subjects are addressed?
- Friction brakes and vehicle scope
- Dynamometer and test setup
- Brake particles and result calculation
Common question
Does an exhaust emissions result also describe brake emissions?
No. Brake emissions are a separate measurement subject arising from friction and wear. The R179 working text describes a laboratory method for that subject.
Published RegsUP edition
This page is tied to the published RegsUP working edition below; it is not an official consolidated text.
RegsUP record title: R179 — UN Regulation No. 179
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.