| The LDWS system works as follows: when the vehicle moves across road markings (white line lane markers) without the indicator being used, infrared sensors behind the front bumper detect the movement and trigger the ECU which warns the driver by means of a vibrating signal on the left or right side of the driver's seat, depending which way the vehicle is drifting. This allows the driver to take immediate action to get back in lane.
The system is activated by a button on the central console and remains active when the engine is switched off.
To detect unintentional lane departures, LDWS uses six infrared sensors which are fitted under the front bumper, three on each side. Each sensor is equipped with an infrared light-emitting diode and a detection cell. Lane departures are detected by variations in the reflections from the infrared beams emitted by the diode onto the road.
The sensors can detect white lines as well as the temporary road markings in yellow, red and blue that are used in some European countries. The system identifies lines (continuous and broken) and other road markings such as directional arrows (except non-standard symbols).
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