Sanitizing seat surfaces in a location being related to a mass assembly areas, such as a public mass transportation vehicle includes a passenger assembly area related to the location. There are multiple rows of seats. A sanitization device includes a mobile body configured to travel along the aisle of the area. An arm extends from the sanitization device laterally from the mobile body across the seats, and a source of UV radiation mounted on the sanitization device is directed across the seats exposing surfaces in the passenger area to UV radiation.
