More on Wheelchair Transit Safety Standards The safety of individuals who must remain seated in their wheelchairs during transit remains an important consideration for therapists prescribing wheelchairs. I have previously written articles on RESNA standards, including WC19 Wheelchairs Used as Seats in Motor Vehicles, WC18 Wheelchair Tiedown and Occupant Restraint Systems (WTORS) for Use in Motor Vehicles, and WC20 Wheelchair Seating Systems for Use in Motor Vehicles. These articles provide information that is helpful in understanding these related standards. 2016-03-22 Keep Reading