Related Experiment Video
Updated: Jun 6, 2026
08:36
Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
[Fatigue and sleepiness in interprovincial road bus drivers: comparative study between formality and informality]
Gustavo R Liendo1, Carla L Castro, Jorge Rey de Castro
1Facultad de Medicina, Universidad Peruana Cayetano Heredia, Lima, Peru. gustavo_liendo@yahoo.com
Revista Peruana De Medicina Experimental Y Salud Publica
|November 13, 2010
Summary
Formal and informal bus drivers experience similar fatigue and sleepiness, despite differences in employment status. Many drivers in formally registered companies operate under informal conditions, impacting road safety.
Area of Science:
- Occupational Health
- Transportation Safety
- Sleep Medicine
Background:
- Bus driver fatigue and sleepiness pose significant risks to road safety.
- Distinguishing between formal and informal employment in the transportation sector is crucial for understanding working conditions.
Purpose of the Study:
- To compare fatigue and sleepiness levels between formal and informal interprovincial bus drivers.
- To evaluate and contrast the labor conditions of these two driver groups.
Main Methods:
- A comparative cross-sectional study utilizing non-probabilistic sampling.
- Inclusion of 100 land transport companies, with drivers classified as formal or informal.
- Surveys included a questionnaire and the validated Epworth Sleepiness Scale.
Main Results:
- Similar rates of insufficient sleep (<7 hours) and involvement in accidents/near-misses were observed in both formal and informal drivers.
- A significant portion of drivers in formally registered companies were found to be informally employed.
- Fatigue and sleepiness peaked between 01:00-04:00, with both groups reporting similar accident associations.
Conclusions:
- Fatigue and sleepiness levels do not significantly differ between formal and informal bus drivers.
- Formal companies exhibit a high prevalence of informal driver employment, highlighting systemic issues.
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