Commission Regulation (EU) No 351/2012Show full title

2. Test procedures U.K.

2.1. The manufacturer shall provide a brief documentation package which gives access to the basic design of the system and, if applicable, the means by which it is linked to other vehicle systems. The function of the system shall be explained and the documentation shall describe how the operational status of the system is checked, whether there is an influence on other vehicle systems, and the method(s) used in establishing the situations which will result in a failure warning signal being displayed. U.K.

2.2. Test conditions U.K.

2.2.1. The test shall be performed on a flat, dry asphalt or concrete surface. U.K.

2.2.2. The ambient temperature shall be between 0 °C and 45 °C. U.K.

2.2.3. Visible lane markings U.K.

2.2.3.1. The visible lane markings used in the lane departure warning tests of point 2.6. shall be one of those identified in the Appendix to this Annex, with the markings being in good condition and of a material conforming to the standard for visible lane markings applied in the Member State concerned. The visible lane marking layout used for the testing shall be recorded. U.K.

2.2.3.2. The vehicle manufacturer shall demonstrate, through the use of documentation, compliance with all the other lane markings identified in the Appendix to this Annex. Any such documentation shall be appended to the test report. U.K.

2.2.3.3. Where the vehicle type can be equipped with different variants of the LDWS with regional specific adjustments, the manufacturer shall demonstrate through documentation that the requirements of this Regulation are fulfilled in all variants. U.K.

2.2.4. The test shall be performed under visibility conditions that allow safe driving at the required test speed. U.K.

2.3. Vehicle conditions U.K.

2.3.1. Test weight U.K.

The vehicle may be tested at any condition of load, the distribution of the mass among the axles being that stated by the vehicle manufacturer without exceeding any of the maximum permissible mass for each axle. No alteration shall be made once the test procedure has begun. The vehicle manufacturer shall demonstrate through the use of documentation that the system works at all conditions of load.

2.3.2. The vehicle shall be tested at the tyre pressures recommended by the vehicle manufacturer. U.K.

2.3.3. Where the LDWS is equipped with a user-adjustable warning threshold, the test as specified in point 2.5. shall be performed with the warning threshold set at its maximum lane departure setting. No alteration shall be made once the test procedure has begun. U.K.

2.4. Optical warning signal verification test U.K.

With the vehicle stationary check that the optical warning signal(s) comply with the requirements of point 1.4.3.

2.5. Lane departure warning test U.K.

2.5.1. Drive the vehicle at a speed of 65 km/h +/- 3 km/h into the centre of the test lane in a smooth manner so that the attitude of the vehicle is stable. U.K.

Maintaining the prescribed speed, gently drift the vehicle, either to the left or the right, at a rate of departure of between 0,1 and 0,8 m/s so that the vehicle crosses the lane marking. Repeat the test at a different rate of departure within the range 0,1 and 0,8 m/s.

Repeat the above tests drifting in the opposite direction.

2.5.2. The LDWS shall provide the lane departure warning indication mentioned in point 1.4.1. at the latest when the outside of the tyre of the vehicle’s front wheel closest to the lane markings crosses a line 0,3 m beyond the outside edge of the visible lane marking to which the vehicle is being drifted. U.K.

2.6. Failure detection test U.K.

2.6.1. Simulate a LDWS failure, for example by disconnecting the power source to any LDWS component or disconnecting any electrical connection between LDWS components. The electrical connections for the failure warning signal of point 1.4.2. and the LDWS disable control of point 1.3. shall not be disconnected when simulating a LDWS failure. U.K.

2.6.2. The failure warning signal mentioned in point 1.4.2. shall be activated and remain activated while the vehicle is being driven and be reactivated after a subsequent ignition ‘off’ ignition ‘on’ cycle as long as the simulated failure exists. U.K.

2.7. Deactivation Test U.K.

2.7.1. If the vehicle is equipped with means to deactivate the LDWS, turn the ignition (start) switch to the ‘on’ (run) position and deactivate the LDWS. The warning signal mentioned in point 1.3.2. shall be activated. Turn the ignition (start) switch to the ‘off’ position. Again, turn the ignition (start) switch to the ‘on’ (run) position and verify that the previously activated warning signal is not reactivated, thereby indicating that the LDWS has been reinstated as specified in point 1.3.1. If the ignition system is activated by means of a ‘key’, the above requirement shall be fulfilled without removing the key. U.K.