2020-11-06T14:44:11 n5883

Questionnaire responses from a sample of Australian highway drivers on on-road experiences and awareness of sleepiness

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Driver sleepiness contributes substantially to road crash incidents. Simulator and on-road studies clearly reveal an impairing effect from sleepiness on driving ability. However, the degree to which drivers appreciate the dangerousness of driving while sleepy is somewhat unclear. This study sought to determine drivers' on-road experiences of sleepiness, their prior sleep habits, and personal awareness of the signs of sleepiness. Participants were a random selection of 92 drivers travelling on a major highway in the state of Queensland, Australia, who were stopped by police as part of routine drink driving operations. Participants completed a brief questionnaire that included demographic information, sleepy driving experiences (signs of sleepiness and on-road experiences of sleepiness), and prior sleep habits. A modified version of the Karolinska Sleepiness Scale (KSS) was used to assess subjective sleepiness in the 15 minutes prior to being stopped by police.

Geographical area of data collection

Bruce Highway, Miriam Vale, Queensland
151.597885,-24.294839 151.525233,-24.294839 151.525233,-24.376594 151.597885,-24.376594 151.597885,-24.294839


Watling, Christopher N., Armstrong, Kerry A., Smith, Simon S., & Wilson, Adrian (2015) The on-road experiences and awareness of sleepiness in a sample of Australian highway drivers: A roadside driver sleepiness study. Traffic Injury Prevention. http://dx.doi.org/10.1080/15389588.2015.1033690

Research areas

roadside survey
risky driving
Australian drivers
sleep habits
awareness of sleepiness
driver sleepiness

Cite this collection

Wilson,Adrian; Watling,Christopher; Armstrong,Kerry; Smith,Simon. (2015): Questionnaire responses from a sample of Australian highway drivers on on-road experiences and awareness of sleepiness. [Queensland University of Technology]. https://doi.org/10.4225/09/58819e4b2a287

Data file types



Dates of data collection

From 2011-12-10 to 2011-12-12


Has association with
Adrian Wilson  (Researcher)
Christopher Watling  (Researcher)
Kerry Armstrong  (Researcher)
Simon Smith  (Researcher)


Name: Christopher Watling


Date record created:
Date record modified:
Record status:
Published - Open Access