SOURCE-LINKED REGULATION GUIDE
UN R38 — Rear fog lamps
Review the purpose and scope of rear fog lamps.
Explore the scopeWhat does it cover?
UN R38 concerns approval of rear fog lamps for vehicles and trailers. A rear fog lamp emits a red signal of greater intensity than a rear position lamp so the vehicle is easier to see from behind. The scope includes several L categories and vehicles in categories M, N, O and T.
Who is it for?
Rear-lamp makers and lighting-testing and integration teams.
Which subjects are addressed?
- Rear fog function
- Red signal
- Distinction from position lamps
- Vehicle and trailer scope
Common question
Are rear fog and rear position lamps the same function?
No. A rear fog lamp provides a separate red signal with greater intensity than the rear position lamp.
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 R148 — Light-signalling devices
Find the relevant provision for each signalling-lamp function.
UN R7 — Position, stop and end-outline lamps
Distinguish the lamp functions and their approval scopes.
UN R48 — Installation of lighting and light-signalling devices
Review how approved lamps are used on the vehicle.