SOURCE-LINKED REGULATION GUIDE
UN R121 — Controls, tell-tales and indicators
Review driver-interface identification, location and visibility requirements.
Explore the scopeWhat does it cover?
UN R121 sets requirements for the location, identification, colour and illumination of hand-operated controls, tell-tales and indicators in M- and N-category vehicles. They should be accessible, visible and identifiable by day and night. The regulation addresses risks linked to driver distraction and selecting the wrong control.
Who is it for?
Instrument-panel, driver-interface and vehicle electrical or electronic teams.
Which subjects are addressed?
- Control location
- Tell-tale and indicator identification
- Colour and illumination
- Day and night visibility
Common question
Are only the symbols assessed?
No. The text covers location, identification, colour and illumination together; accessibility and visibility are also part of its purpose.
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