SOURCE-LINKED REGULATION GUIDE
UN R91 — Side-marker lamps
Review lamps that show a vehicle’s presence from the side.
Explore the scopeWhat does it cover?
UN R91 concerns side-marker lamps, defined by their role in indicating a vehicle’s presence when viewed from the side. Its scope includes M, N, O and T categories.
Who is it for?
Lamp, vehicle and trailer manufacturers.
Which subjects are addressed?
- Side-marker lamp
- Side visibility
- Vehicle and trailer scope
- Lamp function
Common question
What is the defined role of a side-marker lamp?
It indicates the presence of a vehicle when seen from the side. The regulation addresses approval of lamps for that function.
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