ISIRI 6672 is a standard published by the Institute of Standards and Industrial Research of Iran (ISIRI) in 2009 based on Directive 76/761/EEC. It defines "motor vehicle headlamps which function as main-beam and/or dippedbeam headlamps and to incandescent electric filament lamps for such headlamps.".
References
ISIRI 6672 Wikipedia(Text) CC BY-SA