Document ID: chunk:federal_register_of_legislation:F2023C00919:body:0:p15
Version: federal_register_of_legislation:F2023C00919
Segment Type: other
Provision Reference: 
Character Range: 51914–55236

is fixed;
              (b) In case of adaptive front-lighting systems (AFS): a light source which can only be replaced by replacement of the lighting unit to which this light source is fixed.
2.7.1.1.3.              "Light source module" means an optical part of a device which is specific to that device. It contains one or more non-replaceable light sources and it may optionally contain one or more holders for approved replaceable light sources.
2.7.1.1.4.              "Filament light source" (filament lamp) means a light source where the element for visible radiation is one or more heated filaments producing thermal radiation.
2.7.1.1.5.              "Gas-discharge light source" means a light source where the element for visible radiation is a discharge arc producing electro-luminescence/fluorescence.
2.7.1.1.6.              "Light-emitting diode (LED) light source" means a light source where the element for visible radiation is one or more solid state junctions producing injection-luminescence/fluorescence.
2.7.1.1.7.              "LED module" means a light source module containing as light sources only LEDs. However it may optionally contain one or more holders for approved replaceable light sources.
2.7.1.2.                        "Electronic light source control gear" means one or more components between supply and light source, whether or not integrated with the light source or the applied lamp, to control voltage and/ or electrical current of the light source.
2.7.1.2.1.              "Ballast" means an electronic light source control gear between supply and light source, whether or not integrated with the light source or applied lamp, to stabilise the electrical current of a gas-discharge light source.
2.7.1.2.2.              "Ignitor" means an electronic light source control gear to start the arc of a gas-discharge light source.
2.7.1.3.                        "Variable intensity control" means the device, which automatically controls rear light signalling devices producing variable luminous intensities to assure the unvarying perception of their signals. The variable intensity control is part of the lamp, or part of the vehicle, or split between the said lamp and the vehicle.
2.7.2.                              "Equivalent lamps" means lamps having the same function and authorized in the country in which the vehicle is registered; such lamps may have different characteristics from those installed on the vehicle when it is approved on condition that they satisfy the requirements of this Regulation.
2.7.3.                              "Independent lamps" means devices having separate apparent surfaces in the direction of the reference axis,[3] separate light sources and separate lamp bodies.
2.7.4.                              "Grouped lamps" means devices having separate apparent surfaces in the direction of the reference axis2 and separate light sources, but a common lamp body.
2.7.5.                              "Combined lamps" means devices having separate apparent surfaces in the direction of the reference axis,2 but a common light source and a common lamp body.
2.7.6.                              "Reciprocally incorporated lamps" means devices having separate light sources or a single light source operating under different conditions (for example,