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Nearly one in every three deaths and injuries on the road are related to driver fatigue. Health and safety laws aim to reduce driver fatigue, but not the risk of what sleep scientists call drowsiness. Mark Horstman test drives an Australian first technology - smart glasses - designed to measure the velocity of a blinking eye and the tell-tale signs of drowsiness. Whole fleets of vehicles can be monitored by a central control room from a distance, allowing employers to pull drivers off the road before they're in danger of taking an unintentional 'nanonap'.