Causal Factors and Symptoms of Task-Related Human Fatigue in Vessel Traffic Service: A Task-Driven Approach

Fan Li, Chun Hsien Chen, Gangyan Xu, Danni Chang, Li Pheng Khoo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


Human fatigue is a major risk factor in transportation that contributes, directly or indirectly, to a large number of traffic accidents. Though many studies have investigated fatigue-inducing factors in transportation to manage human fatigue more efficiently, there are limited studies related to vessel traffic service (VTS). To fill this gap, this work aims to determine the key causal factors and symptoms of human fatigue with a focus on VTS operations. Achieving this aim is hindered by the problems of no standard definition of task-related fatigue and limited data sources. To solve these problems, this paper proposes a novel definition of task-related human fatigue, a task-driven approach for identifying causal factors and a causal network-based approach for selecting key causal factors. Twelve key causal factors of human fatigue in VTS were identified and analysed. In addition, it was found that VTS operators suffered from multidimensional fatigue, especially physical fatigue. The results provide a foundation and future directions for designing interventions to manage human fatigue.

Original languageEnglish
Pages (from-to)1340-1357
Number of pages18
JournalJournal of Navigation
Issue number6
Publication statusPublished - Nov 2020
Externally publishedYes


  • Causal Factors
  • Human Fatigue
  • Human Fatigue Causal Network
  • Task-Driven
  • Vessel Traffic Service

ASJC Scopus subject areas

  • Oceanography
  • Ocean Engineering


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