This standard specifies the technical requirements, test methods and inspection rules for the light distribution performance of turn signal lamps of automobiles and trailers. This standard applies to all types of turn signal lamps used by M, N and O vehicles. In this standard, the above-mentioned turn signal lamps are also referred to as devices.
GB 17509-2008 Referenced Document
GB 15766.1 Lamps for road vehicles.Dimensional, electrical and luminous requirements
GB 4599 Motor vehicle headlamps equipped with filament lamps
GB 4785 Prescription for installation of the external lighting and light-signalling devices for motor vehicles and their trailers*, 2019-12-17 Update
GB 17509-2008 history
2008GB 17509-2008 Photometric characteristics of direction indicators for motor vehicles and their trailers
1998GB 17509-1998 Photometric characteristics of direction indicators for motor vehicles and their trailers