This study addresses whether subjective workload, stress and fatigue vary as a function of reported workload, time of day, and time on task for railroad dispatchers. Workload and subjective rating data were collected for two weeks at both a freight and a passenger dispatching facility. Results indicate that subjective fatigue is an amalgamation of time-on-task and time-of-day functions, though there appears to be a “rush hour” effect. Subjective stress and workload were mainly affected by reported workload and time-on-task. Number of trains handled was the more influential of the two reported workload measures.
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