Oklahoma Locksmith Practice Exam 2025 - Free Locksmith Practice Questions and Study Guide

The maximum noise level in decibels that requires ear protection on a construction site is defined by various safety regulations to prevent hearing loss due to prolonged exposure to loud sounds. Typically, the threshold for requiring hearing protection is set at 85 to 90 dB, with increasing urgency for protection as noise levels rise.

The correct answer indicates that at 115 dB, immediate ear protection is necessary. This is crucial because sounds at this level can lead to immediate hearing damage with only brief exposure. At this high noise level, the risk of noise-induced hearing loss is significantly increased, making it essential for construction workers to use appropriate hearing protection to safeguard their auditory health.

The options providing lower dB levels, though they may also warrant protection, do not reflect the urgency that 115 dB does, as they can allow slightly longer exposure without immediate risk. However, at 115 dB, the importance of protecting one’s hearing becomes paramount even for short durations of exposure.