Last week, a federal judge ruled that UPS could not bar deaf drivers from driving small trucks. UPS had argued that deaf drivers have higher accident rates compared to employees who aren't hearing impaired.
The federal government sets rules for large trucks--more than five tons. But for smaller vehicles, it's up to the private sector to set its own rules. According to Reuters, "the plaintiffs' lawyers estimate that about 1,000 UPS employees are deaf." UPS has a total of 317,000 employees.