Document ID: chunk:federal_register_of_legislation:F2023C00919:body:0:p16
Version: federal_register_of_legislation:F2023C00919
Segment Type: other
Provision Reference: 
Character Range: 54938–58192

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, optical, mechanical, electrical differences), totally or partially common apparent surfaces in the direction of the reference axis2 and a common lamp body.[4]
2.7.7.                              "Single function lamp" means a part of a device which performs a single lighting or light signalling function.
2.7.8.                              "Concealable lamp" means a lamp capable of being partly or completely hidden when not in use. This result may be achieved by means of a movable cover, by displacement of the lamp or by any other suitable means. The term "retractable" is used more particularly to describe a concealable lamp the displacement of which enables it to be inserted within the bodywork.
2.7.9.                              "Driving-beam (main beam) headlamp" means the lamp used to illuminate the road over a long distance ahead of the vehicle.
2.7.10.                          "Passing-beam (dipped beam) headlamp" means the lamp used to illuminate the road ahead of the vehicle without causing undue dazzle or discomfort to oncoming drivers and other road users.
2.7.10.1.                    "Principal passing-beam (principal dipped-beam)" means the dipped-beam produced without the contribution of infrared (IR) emitter and/or additional light sources for bend lighting.
2.7.11.                          "Direction indicator lamp" means the lamp used to indicate to other road users that the driver intends to change direction to the right or to the left.
A direction-indicator lamp or lamps may also be used according to the provisions of Regulation No. 97 or No. 116.
2.7.12.                          "Stop lamp" means a lamp used to indicate to other road users to the rear of the vehicle that the longitudinal movement of the vehicle is intentionally retarded.
2.7.13.                          "Rear-registration plate illuminating device" means the device used to illuminate the space reserved for the rear registration plate; such a device may consist of several optical components.
2.7.14.                          "Front position lamp" means the lamp used to indicate the presence and the width of the vehicle when viewed from the front.
2.7.15.                          "Rear position lamp" means the lamp used to indicate the presence and width of the vehicle when viewed from the rear.
2.7.16.                          "Retro reflector" means a device used to indicate the presence of a vehicle by the reflection of light emanating from a light source not connected to the vehicle, the observer being situated near the source.
For the purposes of this Regulation, the following are not considered as retro reflectors:
2.7.16.1.                    Retro reflecting number plates;
2.7.16.2.                    The retro reflecting signals mentioned in the ADR (European Agreement concerning the international carriage of dangerous goods by road);
2.7.16.3.                    Other retro-reflective plates and signals which