Headlamp 1 : A lamp designed to illuminate the road ahead of a vehicle, and that is: (a) a dipped-beam headlamp; or (b) a main-beam headlamp; or (c) a combination of a dipped-beam headlamp and a main-beam headlamp.
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}