Based on Coroners ' verdicts, fatigue of car or truck drivers was a contributing factor in 9.1 % of fatal accidents involving trucks. Based on the presence of factors such as extended driving hours, falling asleep at the wheel, comments about tiredness, driving right of centre and night-time driving, the authors estimated fatigue contributed to 19.9 % of the accidents. There were approximately equal numbers of fatigued car drivers and truck drivers. An analysis of casualty and fatal truck accidents by time of day (adjusted for exposure) showed that accident risks were highest during the night on all five Victorian highways studied. Driver fatigue is one of the possible factors underlying this pattern of elevated risk. The report section described in-vehicle fatigue counter-measures. The distinction between fatigue monitors and alerting devices was made and it was recommended that eye closure and head nodding monitors and an alerting device be tested in the next stage of this project. Key Words: Fatigue (human), accident rate, fatality,

Objectives: To provide a consensus report from an expert group on options for the medium term development of regulatory approaches to the management of fatigue in drivers of heavy vehicles. Abstract: This report was commissioned jointly by the National Road Transport Commission of Australia, the Australian Transport Safety Bureau and the New Zealand Land Transport Safety Authority. The fatigue expert group comprised leading Australian and New Zealand experts in sleep, shiftwork and road safety who collaborated with the participating agencies and industry representatives to construct a set of evidence-based design principles for future fatigue regulatory options. The group considered that the management of driver fatigue is not a matter for operators and