Noise Exposure and Convertible Cars

It is known that noise exposure can cause temporary and/or permanent damage to hearing ability. Repeated and prolonged exposure increases the chance of causing damage. In a study completed by Michael, Opie, & Smith, the noise levels while driving a convertible car were measure to analyze the potential for noise induced hearing loss. In the study they used 7 different convertibles and compared the noise level at different speeds and with the windows up and down. The results suggest that when the windows and roof of the convertible are down, the level of noise is such that it has the potential to cause damage to hearing. Interestingly, at a speed of 50 mph the noise level was higher than at 70 mph. The mean noise level was 85 dB – 90 dB.  The noise level can be exaggerated by road surface and traffic load. The article suggests that hearing protection can be worn, although the potential for damage can be reduced by rolling up the windows.