4.2.3.1. on headlamps meeting the requirements of this Regulation which are so designed that the filament lamp, gas-discharge light source or LED module(s) producing the passing beam shall not be lit simultaneously with that of any other lighting function with which it may be reciprocally incorporated: an oblique stroke (/) shall be placed behind the passing lamp symbol in the approval mark.
4.2.3.1. on headlamps meeting the requirements of this Regulation which are so designed that the filament lamp, gas-discharge light source or LED module(s) producing the passing beam shall not be lit simultaneously with that of any other lighting function with which it may be reciprocally incorporated: an oblique stroke (/) shall be placed behind the passing lamp symbol in the approval mark.