6533b7defe1ef96bd12766ed
RESEARCH PRODUCT
Sleep and sleepiness in shift-working tram drivers
Mikael SallinenAsko TolvanenSampsa PuttonenJussi OnninenJussi OnninenJussi VirkkalaTarja Hakolasubject
MaleSleepinessTime FactorsväsymysTransportationAudiologySmartphone applicationFATIGUEunettomuusROAD0302 clinical medicineWork Schedule Tolerance11. SustainabilityMedicineSafety Risk Reliability and Quality050107 human factorsSleep lossMorningRISKkuljettajatraitiovaununkuljettajatREST05 social sciencesAccidents TrafficHAULMiddle Aged030210 environmental & occupational health3142 Public health care science environmental and occupational healthvuorotyöFemaleSleep (system call)Sleep lossAdultAutomobile DrivingCAFFEINEmedicine.medical_specialtyEvening515 Psychologyurban transportationPhysical Therapy Sports Therapy and RehabilitationHuman Factors and ErgonomicsINDIVIDUAL-DIFFERENCESsleep lossuni (lepotila)03 medical and health sciencesSleep Disorders Circadian RhythmCOUNTERMEASURESHumans0501 psychology and cognitive sciencesdriver fatigueEngineering (miscellaneous)unihäiriötbusiness.industryUrban transportationActigraphySleep timeDriver fatigueUrban transportationkaupunkiliikenneliikenneonnettomuudetSleepbusinessdescription
Driver sleepiness contributes to traffic accidents. However, sleepiness in urban public transport remains an understudied subject. To fill this gap, we examined the sleepiness, sleep, and on-duty sleepiness countermeasures (SCMs) in 23 tram drivers working morning, day, and evening shifts for three weeks. Sleepiness was measured using Karolinska Sleepiness Scale (KSS). Nocturnal total sleep time (TST) was measured with wrist actigraphy. SCMs and naps were self-reported with a smartphone application. Caffeine and napping were considered effective SCMs. Severe sleepiness (KSS >= 7) was observed in 22% of shifts with no differences between shift types. Rest breaks were associated with slight reductions in sleepiness. TST between days off averaged 7 h but was 1 h 33 min and 38 min shorter prior to morning and day shifts, respectively. The use of effective SCMs showed little variance between shift types. These results highlight the need for fatigue management in non-night-working tram drivers. Peer reviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-10-01 |