You should also
- use dipped headlights, or dim-dip if fitted, at night in built-up areas and in dull daytime weather, to ensure that you can be seen
- keep your headlights dipped when overtaking until you are level with the other vehicle and then change to main beam if necessary, unless this would dazzle oncoming road users
- slow down, and if necessary stop, if you are dazzled by oncoming headlights.
Section: General rules, techniques and advice for all drivers and riders (rules 103 to 158) Subsection: Lighting requirements (rules 113 to 116)All Highway Code Rules | My Saved Highway Code Rules