Accessibility

New W18 standards to provide increased safety for wheelchair passenger transport

Posted on May 20, 2014

With safety as the number one priority in wheelchair transportation, the Rehabilitation Engineering Assistive Technology Society of North America (RESNA) updated the WC18 standards for wheelchair tie-down and occupant restraint systems (WTORS), which will take effect in December 2015.

RELATED: New standards promise stronger wheelchair tiedowns, increased safety

Currently, WC18 requires that WTORS withstand a sled impact test using a 30mph/20g crash pulse, a 187 lb. surrogate wheelchair and a 170 lb. midsize adult male crash-test dummy where the lap belt is anchored to the vehicle. Since new WC19 standards now require the availability of an optional wheelchair–anchored lap belt to hold the occupant into place, RESNA had to address the higher wheelchair forces that would be transmitted to the tiedown/securement systems when a person riding in a wheelchair is using that lap belt.

As a result, RESNA developed the new WC18 standard requiring that WTORS must also be able to withstand the increased forces generated in a second impact test, in which the 170 lb. crash-test dummy is restrained by a lap belt that is anchored to the surrogate wheelchair rather than to the vehicle itself.

“Manufacturers of wheelchair and occupant restraint systems and those responsible for transporting people dependent on wheelchairs are planning now for the new safety regulations,” said Bob Joseph, VP of Business Development for Q’Straint. “One way to ensure compliance with the new WC18 standards by the December 2015 deadline is to consider equipment upgrades to transportation fleets and personal mobility vehicles in advance.”

In compliance with the new standards, Q’Straint has developed the QRT-360, the first retractor to meet the requirements.

The QRT-360 is the first four-point, heavy-duty, fully automatic retractable tie-down system designed, engineered and built to perform successfully in the required 30mph frontal crash when a wheelchair passenger is traveling in a motor vehicle and is using the optional lap belt as discussed above. It also offers a shortened retractor footprint that allows for more flexibility in vehicle anchor-point locations to better accommodate large wheelchairs.

This new product is therefore compatible with the widest variety of wheelchairs and is an acceptable solution to wheelchair securement in all types of motor vehicles, according to company officials.

In addition, the self-tensioning tie-down system automatically tightens the straps during small wheelchair movements that occur during travel to eliminate slack. The belts continue to tighten during low-g vehicle accelerations, thereby further reducing the potential for wheelchair movement in the event of a collision. The webbing used in this system has also been redesigned and is twice as strong as the material used with other wheelchair and occupant restraint systems.

“The benefits of the new WC18 standards address not only improved passenger safety, but also offer a more efficient and independent securement process,” adds Joseph. “All industry transit providers and those with private vehicles should begin their preparations for complying and update themselves on the new standards and the products that meet these standards.”

As background, WC19 was the first industry standard in the U.S. for wheelchair manufacturers to address the design and performance of wheelchairs used as seats in motor vehicles. WC18 governs the systems used to safely secure the wheelchairs within the personal or commercial vehicle.

For more information on Q’Straint’s QRT-360 retractor and its compliance with WC18, visit www.qstraint.com/qrt-360.

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