The Lane Departure Warning (LDW) system’s goal is to let know the driver that a possible distraction has made the vehicle to move out of its lane.
The lane change detection is carried out by a front camera. This camera captures images from the road and processes it through an artificial vision system. The system monitors, simultaneously, the indicators in order to decide if the manoeuvre has been intentional or not.
The system can differentiate between lane change, and lane invasion. It understands a lane change those lateral movements wide enough so the vehicle positions itself in the contiguous lane.
In the other hand, a lane invasions are those circumstances in which part of the vehicle steps for a moment one of the adjacent lanes while the vehicle remains in its original lane.
When the system generates a warning, it lets it know to the driver by making the driver’s seat vibrate. If the driver invades the left lane, the lef side of the seat will vibrate; and if it the right lane is invaded the right side of the seat will vibrate.
This system is focused on medium and long distance transports through high capacity roads. It activates when the vehicle exceeds 60Km/h (37mph).