Are flashing bicycle lights allowed at night in Northern Ireland?

Yes. The Northern Ireland Highway Code permits flashing bicycle lights, provided the cycle still meets its required front and rear lighting rules.

Rule 60 requires a white front lamp and a red rear lamp between sunset and sunrise, with the appropriate reflectors fitted. Flashing lights are allowed, although a steady front lamp is recommended on unlit roads because it helps the cyclist see the way ahead. A flashing decorative light of the wrong colour is not a substitute for the legally required lights.