Research on the real spatial requirements of wheeled mobility devices has been done several times in the past. But when it comes to developing standards to suit a wider user group, somehow those measurements get lost in translation. However, the world is moving on. The population is ageing (more mobility scooters) and people using wheelchairs of all sizes are able to get out and about more. Public transport has to keep up. To this end an interactive web tool has been developed to determine the dimensions of clear floor area to incorporate more users of wheeled mobility devices. The title of this important article explains the tool, Revisiting Clear Floor Area Requirements for Wheeled Mobility Device Users in Public Transportation. The article is not open source so needs institutional access (or purchase), but here is a section from the abstract:
“The web-based design tool is now available to practitioners who seek to accommodate a wider range of WhMD [wheeled mobility device] users than the minimum standards required by regulations. The design tool is also intended as a visual evidence base for regulatory activity and universal design practice with higher ambitions. The advent of driverless automated vehicles will increase the importance of accessibility and usability to accommodate the diversity of riders with disabilities. Clear floor space to enable independent ingress, interior circulation and egress among WhMD users will be a foremost concern. The transportation industry, standards developers, disability advocates, mobility device manufacturers and prescribers need to understand the limitations of current accessibility standards and work to address these limitations through updated vehicle design standards and policies.