scope:

This international standard applies to wheelchair passenger spaces (RF-WPSs) intended for use by rearfacing wheelchair-seated occupants, with a body mass greater than 22 kg, when travelling in accessible transport vehicles. It applies to systems for use in vehicles designed to transport both sitting and standing passengers (ATV-SS) used mainly on fixed route service, when operated under normal and emergency driving conditions. It assumes that the maximum acceleration imparted to the vehicle in any direction during emergency driving manoeuvres will not exceed 1 g. This standard specifies design and performance requirements and associated test methods, requirements for manufacturer instructions and warnings to installers and users, requirements for product labelling and disclosure of test information. The primary purpose of this standard is to limit those movements of the rear-facing wheelchair, including scooters with three and more wheels, that may be hazardous to either the wheelchair user or other passengers in the vehicle. However, a vehicle-mounted lap belt or some other retention device is required that is intended to prevent an otherwise unrestrained occupant from falling out of their wheelchair during unexpected vehicle manoeuvres. The provisions of this standard apply primarily to a complete RF-WPS, but subsets of the provisions can be applied to components and subassemblies sold separately, as appropriate to the specific functions of the components and/or subassemblies they are intended to replace