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Related Experiment Videos

Hearing levels of railroad trainmen.

W W Clark1, G R Popelka

  • 1Central Institute for the Deaf, St. Louis, MO 63110.

The Laryngoscope
|November 1, 1989
PubMed
Summary

Railroad train crew members showed no significant hearing loss compared to a control group. Age impacted hearing, but years of service and occupational noise exposure did not, indicating no risk of noise-induced hearing loss.

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Area of Science:

  • Occupational Health
  • Audiology
  • Environmental Health

Background:

  • Occupational noise exposure is a significant concern for hearing loss in various industries.
  • Railroad environments present unique noise challenges for train crew members.
  • Understanding the impact of occupational noise on hearing is crucial for conservation programs.

Purpose of the Study:

  • To assess the hearing sensitivity of railroad train crew members within a new hearing conservation program.
  • To compare the hearing sensitivity of trainmen with a control population unexposed to occupational noise.
  • To determine the influence of age and years of service on hearing levels in railroad workers.

Main Methods:

  • Hearing sensitivity was measured in 9427 railroad train crew members.
  • A control group without occupational noise exposure was used for comparison.
  • Multiple regression analysis was employed to analyze the effects of age and years of service.

Main Results:

  • No significant difference in hearing sensitivity was found between trainmen and the control population.
  • Age was a significant factor in hearing levels, whereas years of service was not.
  • Evaluation using National Institute for Occupational Safety and Health (NIOSH) risk categories indicated no occupational noise-induced hearing loss risk.

Conclusions:

  • Railroad trainmen, in this study, did not exhibit hearing loss attributable to occupational noise.
  • Locomotive cab noise levels are generally not considered hazardous for trainmen.
  • The implemented hearing conservation program appears effective in protecting trainmen's hearing.

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