Every year sleepiness is a cause of a large amount of traffic accidents. Studies indicate that sleepiness could be a contributing factor for around 10 to 40 per cent of all traffic accidents. The research about sleepiness at VTI in is focused on mapping out the amount of sleepy drivers and sleepiness related accidents.
For example, survey studies show that 30 per cent of drivers aged 20 to 24 years old have fallen asleep or almost fallen asleep while driving, during the last year. Not sleeping enough, being awake too long or driving late at night or early in the morning increases the risk of sleepiness related accidents. Young drivers, professional drivers, shift workers and individuals with sleeping disorders are risk groups.
A basic task for research concerning sleepiness is to map out the amount of sleepy drivers and sleepiness related accidents to be able to identify risk factors and act preventive. An important aspect in the preventive work is to investigate factors that affect the driver’s performance:
- Time of day
- Hours awake
- Number of hours slept.
Other important aspects are how work hours and driving time affects the amount of sleepiness. A central issue is how to measure and detect sleepiness in drivers in a reliable way. This is an area of interest that enables development of measurement methods for research purposes, but also contributes to the development of driver assistance systems that warn the driver when he/she is too tired to drive.
Med. dr Anna Anund wrote a thesis on the subject of sleepiness in 2009; Sleepiness at the wheel.
The research concerning sleepiness often made in cooperation with, for instance, the Stress Research Institute at Stockholm University and the automotive industry.
Published articles and reports
- Mårdh S, Mårdh P, Anund A. Driving restrictions post-stroke: Physicians’ compliance with regulations. Traffic Inj Prev. 2017.
- Ruben B, Anund A. Posters From AAAM's 60th Annual Scientific Conference. Traffic Injury Prevention. 2016;17(sup1):222-3.
- Hughes B, Anund A, Falkmer T. A comprehensive conceptual framework for road safety strategies. Accid Anal Prev. 2016;90:13-28.
- Fors C, Ahlstrom C, Anund A. A comparison of driver sleepiness in the simulator and on the real road. Journal of Transportation Safety & Security. 2016:1-16.
- Anund A, Ihlström J, Fors C, Kecklund G, Filtness A. Factors associated with self-reported driver sleepiness and incidents in city bus drivers. Industrial health. 2016;54:1-10.
- Watling CN, Akerstedt T, Kecklund G, Anund A. Do repeated rumble strip hits improve driver alertness? J Sleep Res. 2015
- Anund A, Lahti E, Fors C, Genell A. The effect of low-frequency road noise on driver sleepiness and performance. PLoS One. 2015;10(4):e0123835.
- Anund A, Fors C, Kecklund G, Leeuwen W, Åkerstedt T. Countermeasures for fatigue in transportation: a review of existing methods for drivers on road, rail, sea and in aviation. Statens väg- och transportforskningsinstitut.; 2015. Report No.: VTI report 852A.
- Ahlstrom C, Fors C, Anund A, Hallvig D. Video-based observer rated sleepiness versus self-reported subjective sleepiness in real road driving. European Transport Research Review. 2015;7(38).
- Åkerstedt T, Anund A, Axelsson J, Kecklund G. Subjective sleepiness is a sensitive indicator of insufficient sleep and impaired waking function. J Sleep Res. 2014;23(3):240-52.
- Hallvig D, Anund A, Fors C, Kecklund G, Åkerstedt T. Real driving at night - Predicting lane departures from physiological and subjective sleepiness. Biological Psychology. 2014;101(1):18-23.
- Filtness AJ, Anund A, Fors C, Ahlstrom C, Akerstedt T, Kecklund G. Sleep-related eye symptoms and their potential for identifying driver sleepiness. J Sleep Res. 2014;23(5):568-75.
- Anund A, Kecklund G, Fors C, Ihlström J, Ingre M, Radun I, et al. Bussförares arbetstider kopplat till trötthet. 2014. Report No.: VTI report 830-2014.
- Anund A, Fors C, Hallvig D, Akerstedt T, Kecklund G. Observer rated sleepiness and real road driving: an explorative study. PLoS One. 2013;8(5):e64782.
- Akerstedt T, Hallvig D, Anund A, Fors C, Schwarz J, Kecklund G. Having to stop driving at night because of dangerous sleepiness--awareness, physiology and behaviour. J Sleep Res. 2013;22(4):380-8.