GB 5920-2019 Photometric characteristics of front and rear position lamps, end-outline marker lamps and stop lamps for motor vehicles and their trailers
Photometric characteristics of front and rear position lamps, end-outline marker lamps and stop lamps for motor vehicles and their trailers English
1 Scope
This standard specifies technical requirements, test methods and inspection rules of photometric characteristics of front and rear position lamps, end-outline marker lamps and stop lamps for motor vehicles and trailers
This standard is applicable to all kinds of front and rear position lamps, end-outline marker lamps and stop lamps for motor vehicles of Types M, N and O and trailers.
In this standard, all kinds of signal lamps above are also called devices.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
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
GB/T 15766.1 Lamps for road vehicles - Dimensional electrical and luminous requirements
ECE R37 Uniform provisions concerning the approval of filament lamps for use in approved lamp units of power-driven vehicles and of their trailers
ECE R128 Uniform provisions concerning the approval of light emitting diode (LED )light sources for use in approved lamp units on power-driven vehicles and their trailers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 4599 and GB 4785 as well as the following apply.
3.1
variable intensity control
a device that can automatically control the rear signal device which produces different levels of luminous intensity to ensure a stable, identifiable light signal. The variable intensity control is a part of the device or vehicle, or is independent from the the above device and vehicle
