Document ID: chunk:federal_register_of_legislation:F2023C00919:body:0:p18
Version: federal_register_of_legislation:F2023C00919
Segment Type: other
Provision Reference: 
Character Range: 60710–63853

indicate clearly the vehicle's overall width. This lamp is intended, for certain vehicles and trailers, to complement the vehicle's front and rear position lamps by drawing particular attention to its bulk.
2.7.24.                          "Side marker lamp" means a lamp used to indicate the presence of the vehicle when viewed from the side.
2.7.25.                          "Daytime running lamp" means a lamp facing in a forward direction used to make the vehicle more easily visible when driving during daytime.
2.7.26.                          "Cornering lamp" means a lamp used to provide supplementary illumination of that part of the road, which is located near the forward corner of the vehicle at the side towards which the vehicle is going to turn.
2.7.27.                          "Objective luminous flux" means:
(a) In the case of a light source:
              The value of the objective luminous flux, not including any tolerances, as indicated in the relevant data sheet of the applicable light source Regulation according to which the light source is approved;
(b) In the case of an LED module:
              The value of the objective luminous flux as indicated in the technical specification submitted with the LED module for approval of the lamp of which the LED module is a part;
2.7.28.                          "Adaptive front lighting system" (or "AFS") means a lighting device type-approved according to Regulation No. 123, providing beams with differing characteristics for automatic adaptation to varying conditions of use of the dipped-beam (passing-beam) and, if it applies, the main-beam (driving-beam).
2.7.28.1.                    "Lighting unit" means a light-emitting component designed to provide or contribute to one or more front lighting function(s) provided by the AFS.
2.7.28.2.                    "Installation unit" means an indivisible housing (lamp body) which contains one or more lighting unit(s).
2.7.28.3.                    "Lighting mode" or "mode" means a state of a front lighting function provided by the AFS, as specified by the manufacturer and intended for adaptation to specific vehicle and ambient conditions.
2.7.28.4.                    "System control" means that part(s) of the AFS receiving the AFS control signals from the vehicle and controlling the operation of the lighting units automatically.
2.7.28.5.                    "AFS control signal" (V, E, W, T) means the input to the AFS in accordance with the paragraph 6.22.7.4. of this Regulation.
2.7.28.6.                    "Neutral state" means the state of the AFS when a defined mode of the class C passing-beam ("basic passing-beam") or of the main beam in the maximum condition of activation, if any, is produced, and no AFS control signal applies.
2.7.28.7.                    "Adaptive main-beam" means a main-beam of the AFS that adapts its beam pattern to the presence of oncoming and preceding vehicles in order to improve the long-range visibility for the driver without causing discomfort, distraction or glare to other road users.
2.7.29.                          "Exterior courtesy lamp" means a lamp used to