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DF-8: a specific scale for assessing work fatigue in professional drivers.

Patricia Tàpia-Caballero^1,2, María-José Serrano-Fernández^1,3, Joan Boada-Grau¹

¹Department of Education Sciences and Psychology, Universitat Rovira i Virgili, Spain.

International Journal of Occupational Safety and Ergonomics : JOSE

|March 19, 2021

Summary

Researchers developed the driver fatigue (DF-8) scale to measure work fatigue in professional drivers. This reliable and valid instrument accurately assesses driver fatigue, aiding in safety research.

Keywords:

fatigue professional drivers scale traffic safety transportation

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Area of Science:

Occupational Health
Psychometrics
Transportation Safety

Background:

Driver fatigue is a significant concern in occupational health and road safety.
Existing measures may not adequately capture the nuances of fatigue in professional drivers.

Purpose of the Study:

To develop and validate a new scale, the driver fatigue (DF-8) scale, for measuring work-related fatigue in professional drivers.
To assess the psychometric properties, including reliability and validity, of the newly developed scale.

Main Methods:

The study involved 518 Spanish drivers.
Exploratory Factor Analysis (EFA) was conducted on one subsample to identify scale structure.
Confirmatory Factor Analysis (CFA) was performed on a second subsample to confirm the scale's psychometric properties.

Main Results:

EFA resulted in an eight-item, single-factor solution.
CFA confirmed the scale's structure with good fit indices (RMSEA=0.05, CFI=0.94, TLI=0.92).
The DF-8 scale demonstrated good reliability, convergence, and criteria validity when correlated with external measures.

Conclusions:

The driver fatigue (DF-8) scale is a reliable and valid instrument for assessing work fatigue in professional drivers.
The scale provides a valuable tool for research and practical applications in transportation safety and occupational health.