This article presents a comprehensive review of video-recorded, wheelchair-related "adverse events" involving disuse and misuse of WTORS during transit, identifying WTORS configurations associated with adverse wheelchair and passenger outcomes.
We also characterized adverse events based on wheelchair type, direction of excursion (fore-aft wheelchair excursion, lateral wheelchair excursion, combined fore-aft and lateral wheelchair excursion, and other wheelchair and/or wheelchair passenger excursion), and WTORS configuration (number of tiedowns applied and whether the lap belt and shoulder belt were used).
This WTORS loading scenario was anticipated because of the forward-facing wheelchair setup and rear-impact dynamics.
It is important to compare our results with previously published WTORS loading data.
References 1, 2: The corresponding International Standards for WTORS
and wheelchairs are ISO 10542 and ISO 7176-19, respectively.
Testing so that equipment can be used in all types and sizes of vehicles requires that WTORS
and wheelchairs be tested at crash severities appropriate for van-sized
The dummy was seated in a rigid wheelchair similar to the Society of Automotive Engineers J2252 surrogate , though a lower mass of 37 kg was used because testing the WTORS
was not a goal of these tests.
that meet this standard are dynamically tested with a crash-test dummy in a simulated 30mph/20g frontal impact.
Existing crash-tested strap WTORS
that comply with U.
More information about how to provide safer transportation for wheelchair-seated travelers, as well as manufacturers of WTORS
and wheelchairs with the transit option can be found at www.
SAE J2249 specifies numerous design and performance requirements for WTORS
An effective WTORS
secures the wheelchair to the van floor to prevent movement during a collision.