Fatigue among heavy vehicle drivers: The impact of shift-start times and time of day

Brook A. Shiferaw, Jennifer Cori, Luke A. Downey, Jonny Kuo, Mike Lenne, Shamsi S. Soleimanloo, Tracey Sletten, Shantha M.W. Rajaratnam, Mark E. Howard

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


To examine the relationship between heavy vehicle driver fatigue, time of day and shift-start times, data from an automatic driver monitoring system (Guardian, Seeing Machines) was assessed for over 140,000 shifts across four different operator companies. Results revealed that of the 2290 fatigue events detected, 63% occurred during the night time (between 6pm – 6am). Higher rates of fatigue events were also observed for shifts that started in the afternoon (12pm – 6pm) and evening (6pm – 12am) compared to those starting in the morning (6am – 12pm). Furthermore, shifts that started in the afternoon and evening were associated with earlier onset of fatigue. These results are consistent with the deleterious circadian influence on alertness at night and demonstrate the potential for using alertness monitoring to evaluate the impact of shift schedules on fatigue. Adjusting schedules based on such objective alertness data has the potential to mitigate the impact of fatigue.

Original languageEnglish
Title of host publicationAustralian Transport Research Forum 2019 Proceedings
PublisherAustralasian Transport Research Forum
Number of pages4
Publication statusPublished - 2019
EventAustralasian Transport Research Forum 2019 - Hyatt Hotel, Canberra, Australia
Duration: 30 Sep 20192 Oct 2019
Conference number: 41st
https://www.australasiantransportresearchforum.org.au/papers/2019 (Proceedings)


ConferenceAustralasian Transport Research Forum 2019
Abbreviated titleATRF 2019
Internet address

Cite this