So why as a package car driver would UPS send me(and everyother driver in my old center) to get a DOT physical every other year for 30 years? I can't believe they would waste money on a driver they didn't have to. Part of that phisical was a hearing test.
DOT allows two types of hearing test:
- Audiometric testing (tones played through an earpiece or headset at calibrated levels), or
- Forced Whisper testing (an uncalibrated whisper from 5 feet away, out of the line of vision, in a quiet room).
I have not had a DOT card for a while, but I do not recall
ever having audiometric testing for a DOT exam. The "forced whisper" method allows the examining doctor a lot of leeway, and does not require any special equipment.
The lawsuit that caused this question to be posted is about passing the DOT/FHWA hearing test - which would fail many people we would
not usually call "deaf".
If calibrated audiometric testing were done, maybe 15-20% of UPS drivers would be disqualified before reaching retirement. (I based this on information about noise averages in trucks and OSHA information about hearing losses over time. After 20 years of 40-hour weeks, about 5% of people would suffer enough hearing loss to fail the test. At 25 years, about 10% would fail, and by 30 years, about 20-25% would have failed. By 35 years, nearly 50% would be expected to fail. All these figures make the assumption that there is zero hearing loss from factors outside the workplace. YMMV.)