What kind of hearing loss disqualifies a driver from FMCSA certification?

Severe hearing loss without aid disqualifies a driver from FMCSA certification because the ability to hear is critical for safe driving. The FMCSA requires that drivers have sufficient hearing ability to perceive a forced whisper at a distance of five feet, which is an indication of basic auditory function necessary for navigating road conditions, responding to sirens, and communicating with others. If a driver has severe hearing loss that cannot be corrected with hearing aids, they may not be able to adequately hear important auditory cues that ensure their safety and the safety of others on the road. Thus, this level of hearing impairment is considered a significant risk in maintaining the duties of driving.

In contrast, mild hearing loss is typically manageable and may not be disqualifying if the individual can still meet the minimum hearing requirements. Moderate hearing loss also may not prevent certification if it can be aided. Temporary hearing loss may be an issue but is not a permanent condition, and therefore does not have the same level of disqualification as severe hearing loss without the possibility of correction.