The development of a driver alertness monitoring system.

This chapter describes the monitoring of driver alertness as part of a project to develop a reliable in-vehicle warning system which could be incorporated into an intelligent vehicle highway system. Driver fatigue was measured in a series of trials. The first used a laboratory simulator to collect psycho-physiological data from drivers experiencing levels of fatigue that could not be induced on public roads. The second trial involved a real driving task on a private airfield with sleep-deprived drivers. The final trial used a 150 mile motorway loop without sleep deprivation. Graphs are presented which show changes in drowsiness with time. For the covering abstract see C 45915 (IRRD 876074).