| (b) One additional filament light source approved according to Regulation No. 37, one or more additional LED light source(s) approved according to UN Regulation No. 128 and/or one or more LED module(s), inside the passing beam headlamp, may be used for the purposes of generating infrared radiation. It/they shall only be activated at the same time as the principal passing beam. In the event that the principal light beam fails, this/these additional light source(s) and/or LED module(s) shall be automatically switched off. | a0c0 |