Ford: Driver Alert, introduced with 2011 Ford Focus.Using an infrared camera above the steering wheel, DS DRIVER ATTENTION MONITORING continuously monitors: the eyes for signs of tiredness (blinking) the face and head movements for signs of distraction and the course steered by the car in its road lane (deviations or steering movements by the driver). DS DRIVER ATTENTION MONITORING identifies any reduction in driver alertness.AFIL/LDWS: Lane Departure Warning System gives an audible reminder if you drift out of your lane.Introduced with the 2005 model C4, later followed by 2008 C C4 Picasso. Both systems alert the driver by vibrations in the driver's seat, on the left or right half of the seat cushion, respectively. Other models use a camera mounted in top center of the windscreen for the same purpose. Some models use sensors mounted in front of the front wheels, monitoring the lane markings. Citroën: AFIL/LDWS uses different technologies to monitor the vehicle position on the road.Bosch: "Driver drowsiness detection" takes input from the steering angle sensor, front-mounted lane assist camera, vehicle speed and turn signal stalk.The advice to take a break is provided in the form of graphic symbols shown on the Control Display. BMW: Active Driving Assistant with Attention Assistant analyses driving behaviour and, if necessary, advises the driver to rest.Requires body sensors to measure parameters like brain activity, heart rate, skin conductance, muscle activity, head movements etc. Uses computer vision to observe the driver's face, either using a built-in camera or on mobile devices. Monitoring a driver this way only works as long as a driver actually steers a vehicle actively instead of using an automatic lane-keeping system. Primarily uses steering input from electric power steering system. Various technologies can be used to try to detect driver drowsiness. Some of the current systems learn driver patterns and can detect when a driver is becoming drowsy. Various studies have suggested that around 20% of all road accidents are fatigue-related, up to 50% on certain roads. Driver drowsiness detection is a car safety technology which helps prevent accidents caused by the driver getting drowsy.
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