Wheelchair securement is an issue in public transit that should have been resolved in the first few years after passage of the Americans with Disabilities Act (ADA). ADA requires that wheelchairs be secured so that they will not move more than 50 mm (2 in.) in any direction, even during a crash of the transporting vehicle. This requirement is of great interest to the existing securement industry and to wheelchair manufacturers. The former are interested because of the potential market for securement systems, and the latter because of the liability associated with use of their wheelchairs on public transit. In the 10 years since the ADA became law, some major advances have been made in securement technology. Unfortunately, current secure...