School bus
School bus drivers in the US have raised concerns about the safety of the buses run by Durham, a subsidiary of National Express, and the second-largest operator of school bus services in North America. According to representatives of Durham bus drivers, fluid leaks, tires that need to be replaced, black mold and non-functional emergency equipment are regular concerns, whilst workers continued to operate buses while sick because they cannot afford to miss a day of work and drivers are not paid for all the time they work.