Noise exposure of motorcyclists

Area of Science:

• Occupational Health
• Acoustics
• Transportation Safety

Background:

• Motorcycling involves significant noise exposure, posing risks to hearing health.
• Previous research on helmet noise attenuation often used non-representative conditions.
• Understanding real-world noise levels is crucial for protecting workers.

Purpose of the Study:

• To evaluate occupational noise exposure for motorcyclists.
• To compare noise levels between open and full-face helmets.
• To investigate the impact of helmet design and radio intercoms on noise exposure.

Main Methods:

• Utilized specialized measuring equipment to record noise levels.
• Compared noise exposure with open-face and full-face safety helmets.
• Assessed the contribution of radio intercom systems to noise levels.

Main Results:

• Town driving noise levels (s.leq) ranged from 63 to 90 dB(A), with intercoms causing peak noise.
• Open road noise levels (s.leq) reached up to 105 dB(A).
• 15 minutes of exposure at 105 dB(A) exceeds the 8-hour workday limit of 90 dB(A).

Conclusions:

• Motorcyclist noise exposure, particularly with intercoms, presents a significant occupational health risk.
• Helmet design and use of communication systems critically influence noise exposure levels.
• Current recommended noise exposure limits are insufficient for many motorcycling work scenarios.