Are there special considerations for locating securement points on wheelchairs with tilt-in-space seating systems?
The answer to this question is somewhat dependent on whether one is referring to a WC19-compliant wheelchair or to a non-WC19-compliant wheelchair. For non-WC19-compliant tilt-in-space wheelchairs that do not have four securement points and that have not been crash tested to WC19, it has always been recommended that all four (i.e., two front and two rear) securement points be either attached to the seat or attached to the base of the wheelchair frame. This recommendation is made to minimize the chance for significant slack developing in the tiedown straps during a crash, which would result in large wheelchair movements, or possibly in the wheelchair coming free from one or more of the tiedown straps. This slack could develop, for example, if the securement points at the front are on the base and those at the back are located on the seat behind the pivot point. In a frontal crash, the forces on the back of the seat would be likely to cause the seat to tilt further rearward, thereby redu
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