The self-reported causes of sleepiness in shift-working tram and truck drivers

摘要: Abstract Identifying the causes of sleepiness in various safety-critical work environments is necessary for implementing more efficient fatigue management strategies. In transportation, little known about drivers’ own perceptions these causes. Therefore, we instructed shift-working tram (n = 23) and long-haul truck drivers (n = 52) to report at end their shifts what made them sleepy if they felt so. These self-reports, measured on-duty sleepiness, sleep amounts were recorded on every shift over a period 2–3 weeks per driver. The queried with smartphone applications logs. Sleepiness was Karolinska Scale (KSS) wrist-worn actigraphs. Data analyzed using generalized estimating equations. Sleep loss insufficient rest breaks commonly reported as causing among drivers, whereas time day leading drivers. Other causes, such traffic or cabin conditions, not frequently mentioned. During morning, day, evening shifts, less likely than Similarly, during morning attribute loss. drives reporting severe (KSS ≥ 7 least once, 18–21% shifts), significantly both groups. Reporting associated showed same results highlight need addressing sleep-related transportation provide directions future research regard secondary sleepiness.