SOURCE-LINKED REGULATION GUIDE
UN R148 — Light-signalling devices
Find the relevant provision for each signalling-lamp function.
Explore the scopeWhat does it cover?
UN R148 concerns approval of light-signalling devices for vehicles and trailers. Its scope lists direction indicators, position and stop lamps, reversing, rear fog, parking, daytime-running and side-marker lamps, among others. Alongside general technical requirements, it sets provisions for each function; first identify the correct lamp function.
Who is it for?
Signalling-lamp manufacturers, lighting designers and photometric-testing teams.
Which subjects are addressed?
- Signalling-lamp functions
- General technical requirements
- Function-specific provisions
- Conformity of production
Common question
Does R148 group every headlamp and lamp under one heading?
No. It lists light-signalling devices. Road-illumination devices and retro-reflectors are addressed in other regulations.
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 optionsRelated regulations
UN R149 — Road-illumination devices and systems
Explore headlamp, fog-lamp and adaptive-lighting functions within their own scopes.
UN R150 — Retro-reflective devices and markings
Review reflectors, marking materials and plates by product class.
UN R48 — Installation of lighting and light-signalling devices
Review how approved lamps are used on the vehicle.