Timing of drowsiness events in heavy vehicle fleets

Michael G. Lenne, Michael Fitzharris

Research output: Chapter in Book/Report/Conference proceedingConference PaperOtherpeer-review


Data collected from long-haul trucking fleets were analysed to examine the timing of drowsiness events while driving. Drowsiness event data were collected over a two-month period from 49 trucks. Events were recorded by a commercially available camera-based system mounted on the dashboard that measures head and eyelid metrics to assess drowsiness. By the 90th minute of driving, 75% of drivers who commenced their trip between 6pm-12pm had experienced a fatigue event. Future work will incorporate measures to account for the total trip duration to more fully assess the impact of time of day and trip start time on event rates
Original languageEnglish
Title of host publicationProceedings of the 2016 Australasian Road Safety Conference
Place of PublicationACT Australia
PublisherAustralasian College of Road Safety
Number of pages3
Publication statusPublished - 2016
EventAustralasian Road Safety Conference 2016: Agility, Innovation, IMPACT! - Canberra, Australia
Duration: 6 Sept 20168 Sept 2016


ConferenceAustralasian Road Safety Conference 2016
Abbreviated titleACRS 2016
Internet address


  • heavy vehicle
  • truck
  • drowsy
  • fatigue
  • safety

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