Installing barriers between the driver and passengers also reduces risk to drivers, who spend long hours in tight quarters. Buses that cannot draw in fresh air in the front of the vehicle should be taken off the road, says Sherlock, who worked on the coronavirus project with engineers at the University of Washington’s Aerodynamics Department and the Virginia Tech Transportation Institute. controlling bus airflows to maximize the circulation of fresh air from outside the vehicle and adding sophisticated filters to sterilization systems are two effective ways to minimize health risks to bus operators and passengers.

A driver who turns on the fresh air settings, and selectively uses roof hatches and air blowers, can reduce .
Ventilation also improves interior climatic conditions and, by increasing air humidity, prevents dryness in the mucous membranes in the nose and mouth, which in turn gives better protection against pathogens. Providing fresh air or increasing the amount of fresh air is therefore certainly a worthwhile measure», Konvekta highlights. What is more, «on our systems, the number of germs measured at outlets were lower than those at air intakes. The systems therefore help improve air quality. While viruses may be even smaller than bacteria, filters in air conditioning systems still trap them because viruses always adhere to surfaces».