Division 4.1 HeadlampsX1
United Kingdom
| 4.1.1. Condition and operation | Visual inspection and by operation. | (a) Defective or missing light/light source.(multiple light/light sources; in the case of LED, up to 1/3 not functioning). | X | ||
| Single light/light sources; in the case of LED, seriously affected visibility. | X | ||||
| (b) Slightly defective projection system (reflector and lens). | X | ||||
| Heavily defective or missing projection system (reflector and lens). | X |
| Item | Method | Reasons for failure | Assessment of deficiencies | ||
|---|---|---|---|---|---|
| Minor | Major | Dangerous | |||
| (c) Lamp not securely attached. | X | ||||
| 4.1.2. Alignment | Determine the horizontal aim of each headlamp on dipped beam using a headlamp aiming device or using the electronic vehicle interface. | (a) Aim of a headlamp not within limits laid down in the requirements 1 . | X | ||
| (b) System indicates failure via the electronic vehicle interface. | X | ||||
| 4.1.3. Switching | Visual inspection and by operation or using the electronic vehicle interface | (a) Switch does not operate in accordance with the requirements 1 (Number of headlamps illuminated at the same time) | X | ||
| Maximum permitted light brightness to the front exceeded. | X | ||||
| (b) Function of control device impaired. | X | ||||
| (c) System indicates failure via the electronic vehicle interface. | X | ||||
| 4.1.4. Compliance with requirements 1 . | Visual inspection and by operation. | (a) Lamp, emitted colour, position, brightness or marking not in accordance with the requirements 1 . | X | ||
| (b) Products on lens or light source which obviously reduce light brightness or change emitted colour. | X | ||||
| (c) Light source and lamp not compatible. | X | ||||
| 4.1.5. Levelling devices (where mandatory) | Visual inspection and by operation, if possible, or using the electronic vehicle interface. | (a) Device not operating. | X | ||
| (b) Manual device cannot be operated from driver's seat. | X | ||||
| (c) System indicates failure via the electronic vehicle interface. | X | ||||
| Item | Method | Reasons for failure | Assessment of deficiencies | ||
|---|---|---|---|---|---|
| Minor | Major | Dangerous | |||
| 4.1.6. Headlamp cleaning device (where mandatory) | Visual inspection and by operation if possible. | Device not operating. | X | ||
| In the case of gas-discharging lamps. | X | ||||