Dissertation
The effects of shift work on sleep, drowsiness, and performance in commercial motor vehicle drivers
Doctor of Philosophy (PhD), Washington State University
01/2017
Handle:
https://hdl.handle.net/2376/112131
Abstract
It is important to detect drowsiness in Commercial Motor Vehicle (CMV) operations in a timely manner to reduce drowsiness-related CMV accidents. Measures available to detect drowsiness vary in reliability, validity, usability, and effectiveness. Consideration of such factors is important for the appropriate selection of drowsiness measures under different circumstances. It is further important to investigate drowsiness in real-world CMV operations in order to understand when drivers may be most at risk for drowsiness, and subsequently accident risk.
Federal regulations are in place that limit property-carrying commercial motor vehicle (CMV) driving time that are designed to mitigate the build-up of fatigue in CMV drivers. However, such regulations do not take into account the neurobiology underlying the build-up of fatigue. Laboratory research indicates nighttime CMV driver work results in greater impairment compared to daytime CMV driver work, yet the timing of a rest break helps to mitigate impairment in nighttime work. A naturalistic field study was conducted to investigate whether such results extend to real-world CMV operations. Results were consistent with laboratory research.
Additionally, only a few naturalistic field studies in CMV drivers have been conducted and have reported that CMV driver accident risk is related to hour in the shift (or time on task), rather than the neurobiology of fatigue (Park et al., 2005; Hanowski et al., 2007). It remained an outstanding question to what extent CMV drivers experience fatigue and performance impairment during real world operations due to neurobiological processes or hour in the shift. Naturalistic CMV field research investigated this issue. Results indicate interactions between neurobiological processes, hour in the shift, and type of shift.
In general, fatigue in real-world CMV operations is regulated by neurobiology and can be mitigated through proper consideration and use of that neurobiology.
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Details
- Title
- The effects of shift work on sleep, drowsiness, and performance in commercial motor vehicle drivers
- Creators
- Amy Sparrow
- Contributors
- Hans PA Van Dongen (Advisor)John Hinson (Committee Member)Paul Whitney (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Department of Psychology
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Number of pages
- 128
- Identifiers
- 99900581427301842
- Language
- English
- Resource Type
- Dissertation