Volume 6, Issue 3 (Autumn 2019)
johe 2019, 6(3): 44-53 |
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Yousefi F, Azam K, Zakerian S A. Mental workload and determination of its relationship with situation awareness and work experience among taxi drivers. johe 2019; 6 (3) :44-53
URL: http://johe.umsha.ac.ir/article-1-521-en.html
URL: http://johe.umsha.ac.ir/article-1-521-en.html
1- Department of Occupational Health,School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
2- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
3- Department of Occupational Health,School of Public Health, Tehran University of Medical Sciences, Tehran, Iran , zakerian@tums.ac.ir
2- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
3- Department of Occupational Health,School of Public Health, Tehran University of Medical Sciences, Tehran, Iran , zakerian@tums.ac.ir
Abstract: (4733 Views)
Background and Objective: Investigations show that human error is one of the main causes of car accidents. Drivers' performance is influenced by various factors, such as age, gender, driving environment, and workload which is among the most important factors. The current study aimed to investigate the correlation between mental workload and situational awareness with drivers' work experience.
Materials and Methods: This descriptive cross-sectional study included 26 taxi drivers with different work experiences. Driving Activity Load Index (DALI) was used to assess the drivers’ workload; moreover, the participants’ situation awareness was measured using the Situation Awareness Global Assessment Technique.
Results: The results showed that driving in a long time would increase the mental workload in all dimensions of DALI (P<0.05), among which, visual dimension obtained the highest correlation (r=-0.397, P=0.045). Moreover, there was a significant relationship between increasing workload and drivers’ work experience (P=0.01). The results also revealed that an increase in drivers’ mental workload led to a decrease in their global situation awareness (P<0.001).
Conclusion: The results of this study indicated that an increase in driver’s work experience resulted in decreased levels of mental workload. Moreover, there was a significant difference between people with low or high levels of work experience in terms of attention and situational stress. Additionally, the increasing workload leads to decreased levels of perception. However, drivers with more work experience have less decrease in perception levels. In general, a decrease in the levels of perception among drivers leads to reduction in global situational awareness.
Materials and Methods: This descriptive cross-sectional study included 26 taxi drivers with different work experiences. Driving Activity Load Index (DALI) was used to assess the drivers’ workload; moreover, the participants’ situation awareness was measured using the Situation Awareness Global Assessment Technique.
Results: The results showed that driving in a long time would increase the mental workload in all dimensions of DALI (P<0.05), among which, visual dimension obtained the highest correlation (r=-0.397, P=0.045). Moreover, there was a significant relationship between increasing workload and drivers’ work experience (P=0.01). The results also revealed that an increase in drivers’ mental workload led to a decrease in their global situation awareness (P<0.001).
Conclusion: The results of this study indicated that an increase in driver’s work experience resulted in decreased levels of mental workload. Moreover, there was a significant difference between people with low or high levels of work experience in terms of attention and situational stress. Additionally, the increasing workload leads to decreased levels of perception. However, drivers with more work experience have less decrease in perception levels. In general, a decrease in the levels of perception among drivers leads to reduction in global situational awareness.
Type of Study: Research Article |
Subject:
Ergonomics
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