SOURCE-LINKED REGULATION GUIDE
UN R55 — Mechanical coupling components
Review vehicle-combination couplings against compatibility requirements.
Explore the scopeWhat does it cover?
UN R55 concerns mechanical coupling devices and components for vehicle combinations. It sets conditions for their international interchangeability. The scope covers products for motor-vehicle and trailer combinations and defines configurations such as a dolly.
Who is it for?
Coupling-device, heavy-vehicle and trailer manufacturers.
Which subjects are addressed?
- Mechanical coupling components
- Interchangeability
- Vehicle combinations
- Dolly definition
Common question
Is R55 limited to one type of coupling ball?
No. It concerns mechanical coupling devices and components in vehicle combinations. Select the provisions according to product class and combination layout.
Source documents and references
Work with this regulation in RegsUP.
Read the text with its edition and sources. Assess available comparisons, relevant dates and question-and-answer features against your work needs.
Discuss access options