Traffic control operators (TCOs) are at risk of human fatigue due to their heavy workload, their monotonous work, and the long duration of their shift work. Human fatigue can result in inefficiency, impaired alertness, and even a high probability of human error, and it has been identified as the primary cause of many traffic accidents. Thus, much research has focused on the management of human fatigue in transportation. However, strategies for managing human fatigue in transportation mainly focus on a single aspect of human fatigue, such as mental fatigue or physical fatigue. In addition, the existing strategies primarily center on prescriptive hours-of-work regulations. However, such regulations lack flexibility and fail to consider factors such as individual differences and the dynamic working conditions involved in traffic control. To CF18: Too many unnecessary alarms CF19: Ambiguous alarms CF20: Time pressure in providing information Assign user event (UE)CF16: Inefficient communication due to language barrier CF21: Too many steps to make assignments CF22: Lack of experience CF23: Difficulties in clicking vessels using the mouseIn addition to these task-related factors, 24 factors were collected by SCMbased analysis, as listed in Table 3.3.