Driver drowsiness detection is a car safety technology which helps prevent accidents caused by the driver getting drowsy. Various studies have suggested that around 20% of all road accidents are fatigue-related, up to 50% on certain roads.
BMW: Active Driving Assistant with Attention Assistant analyses driving behaviour and, if necessary, advises the driver to rest. The advice to take a break is provided in the form of graphic symbols shown on the Control Display.
Bosch: "Driver drowsiness detection" takes input from the steering angle sensor, front-mounted lane assist camera, vehicle speed and turn signal stalk.
Citroën: AFIL/LDWS uses different technologies to monitor the vehicle position on the road. Some models use sensors mounted in front of the front wheels, monitoring the lane markings. Other models use a camera mounted in top center of the windscreen for the same purpose. Both systems alert the driver by vibrations in the driver's seat, on the left or right half of the seat cushion, respectively.
Jaguar Land Rover: Driver Condition Monitor and Driver Fatigue Alert, both evaluate driving technique for signs of driver fatigue. When the feature determines if the driver is fatigued, the message center displays the warning, TAKE A BREAK!, for 1 minute, accompanied by an audible chime. When driving continues for more than 15 minutes after the first warning, without taking a break, a further warning is given. The warning continues until the OK button on the steering wheel menu control is pressed.
Mercedes-Benz: Attention Assist In 2009, Mercedes-Benz unveiled a system called Attention Assist which monitors the driver's fatigue level and drowsiness based on his/her driving inputs. It issues a visual and audible alarm to alert the driver if he or she is too drowsy to continue driving. It is linked to the car's navigation system, and using that data, it can tell the driver where coffee and fuel are available.
Volvo Cars: Driver Alert Control In 2007, Volvo Cars launched the world's first Driver Drowsiness Detection system, Driver Alert Control. The system monitors the car's movements and assesses whether the vehicle is being driven in a controlled or uncontrolled way. If the system detects a high risk of the driver being drowsy, the driver is alerted via an audible signal. Also, a text message appears in the car's information display, alerting him or her with a coffee cup symbol to take a break. Additionally, the driver can continuously retrieve driving information from the car's trip computer. The starting-point is five bars. The less consistent the driving, the fewer bars remain.
Anti Sleep Pilot - Danish device that can be fitted to any vehicle, uses a combination of accelerometers and reaction tests.
Vigo - Smart Bluetooth headset that detects signs of drowsiness through the eyes and head motion, and uses a combination of light, sound and vibration to alert the user.
