BMW is developing a new high-tech system to prevent drivers falling asleep at the wheel, after research by the German Insurance Association (GdV) revealed that tiredness caused a quarter of all fatal accidents on autobahns.

BMW's "driving alertness assistant" operates using a small camera fitted inside the car, which examines eye blinking patterns to assess how watchful or tired the driver is. If it recognises that the driver is becoming less attentive the system responds with a visual display warning.

Dr Raymond Freymann, ...

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