Side-facing wheelchair after a frontal impact test

With many wheelchairs, it’s difficult to find four places to attach tiedown straps

ISO 7176-19: Scope Scope: general Specifies general design requirements, test procedures, and performance requirements for wheelchairs that are suitable for forward-facing seating in a motor vehicle. Harmonized with CSA-Z604 & ANSI/RESNA-WC/19

Part 19: Scope (cont.) Part 19 applies to: all wheelchairs that allow a seated posture, wheelchairs for use in all types of vehicles, wheelchairs intended for forward-facing occupancy in a motor vehicle, wheelchairs used by adults only, (US-WC-19 child also) complete wheelchair systems = base + seat

Other Part 19 Contents? design requirements, performance requirements, test methods, labeling requirements. --that are needed to provide safer forward-facing seating in a motor vehicle

Part 19: Design Requirements must allow a seated posture, with seat and seatback angles <30 degrees to horizontal and vertical, respectively

WC/19: Design Requirements Must minimize hard sharp edges

Part 19: Design Requirements-cont. Must provide four accessible attachment points Std. Symbol

Part 19: Design Requirements-cont. Four accessible securement points- --with slot geometry for hook or strap attachment)

Part 19: Design Requirements-cont. Front and rear wheelchair attachment points must be located within specific zones

Part 19: Design Option Wheelchair-Anchored Belts Wheelchairs may also include a fully integrated belt restraint system, where both lower (pelvic) and upper (shoulder or harness belts) anchor to the wheelchair. Currently, a fully integrated restraint is primarily achievable with pediatric wheelchairs.

Part 19: Performance Requirements Frontal Impact @ 30 mph, 20 G Securement-Point Accessibility Tiedown Clear Paths Wheelchair Lateral Stability (US) Accommodation and Fit of Vehicle-Anchored Belt Restraints All confirmed by std. laboratory tests

In Summary: Why choose a Part 19 wheelchair? improved structural design and materials for crashworthiness, reduction in sharp edges and hard points, improved battery retention and increased use of gel-cell batteries, provision of four accessible securement points, provision for use of wheelchair-anchored pelvic belt, improved accommodation and fit of vehicle-anchored belt-restraints.

Other Ongoing Developments Other transport stds. work: ISO 10542: Part 3 - Docking Systems-FDIS Part 4 - Clamp Systems-FDIS Part 5 - Systems for specific wheelchairs-FDIS ISO 16840: Part 4 -Seating systems for use in motor vehicles-DIS All ISO 10542 scheduled for completion in 2004 ISO 16840-2005

ISO 10542-3: Docking Systems Scope: WTORS that use docking type w/c securement, UDIG specification design and performance requirements, all types of w/cs, forward facing in vehicle, adults only. custom securement adapter

ISO 10542-3 Docking Systems -UDIG Adapter Spec.

ISO 10542-3: Docking Systems -UDIG Specification Auto-docking tiedown device

ISO10542-4: Clamp Systems Scope: Performance: WTORS that are use clamp-type WTORS to secure w/cs, design and performance requirements, all types of w/cs, forward facing in vehicle adults only. Performance: 30mph/20g crash test??

ISO10542-5: Systems for specific wheelchairs Scope: WTORS intended for use with a specific w/c design and performance requirements all types of w/cs forward facing in vehicle adults and children >22kg Performance: 30mph/20g crash test?? Specific wheelchair only Docking tiedown device

ISO 16840-4: Seating systems for use in motor vehicles Scope: Seating systems fitted to w/cs design and performance requirements all types of w/cs forward facing in vehicle adults and children >22kg Seating systems not designed to withstand crash loads

ISO 16840-4: Seating Systems -Impact test set-up interchangeable X-brace frames, deformable seat back elements, deformable caster elements, replaceable seat support structure, adjustable foot rest position, 106 lbs. Surrogate Test Base

ISO 16840-4: Seating systems for use in motor vehicles Scope: Seating systems fitted to w/cs design and performance requirements all types of w/cs forward facing in vehicle adults and children >22kg Failed Back Rest 16mph-10g-rear impact

ISO 16840-4: Seating systems for use in motor vehicles Scope: Seating systems fitted to w/cs design and performance requirements all types of w/cs forward facing in vehicle adults and children >22kg Improved Seating System

Summary: Occupant Restraint “Best Practices” Use both pelvic and shoulder belt to restrain the occupant Fit restraints over bony anatomy Upper body restraint over the Sternum Pelvic restraint low over the bony pelvis Avoid loading soft tissues (abdomen) Remove belt slack If available, use a retractor (reduces slack) Or a restraint pre-tensioner (reduces load)

Summary: Procurement Guidelines for W/cs intended for use in motor vehicles When appropriate, recommend W/cs that comply with ISO 7176/19, or equivalent national standards, Request test reports along with pre-sale literature, Verify appropriate labeling on W/c, Awareness of instructions and warnings in user manual, Take time to understand the warnings and installation/usage recommendations.

Wheelchair Transport Standards More transport standards info: www.wheelchairstandards.pitt.edu Click on: W/c Transport Stds. Section FAQs on Transport Safety (>50) www.rercwts.pitt.edu Click on: FAQ

Thank You!

Not Used in Presentation

Powered Docking Tiedown for Disabled Drivers

ISO-DIS 10542-WTORS (Cont.) Installation: Shoulder Belt Anchor Zones This diagram specifies the ranges of shoulder belt anchor zones locations that should be maintained to get optimum crash protection

ISO-DIS 10542, WTORS Installation: Clear Zones This diagram specifies the front and rear clear space zones that should be maintained during vehicle installation to get optimum crash protection. That is, so a W/c occupant is less likely to contact another object in the vehicle during a crash event.

Why standards?-cont. To provide: wheelchair users with the opportunity to use equipment that is comparable in design and performance to vehicle seats and restraint systems available to able-bodied travelers for whom the OEM equipment is safety regulated. where equipment refers to: seats (wheelchairs), seat securement systems, and occupant-restraint systems

ISO-DIS 10542-2 WTORS Installation: Front Tiedown Angles This diagram specifies the ranges of front tiedown strap angles that should be maintained to get optimum crash protection

WTORS Procurement Guidance Purchase contingent upon compliance with ISO10542 or SAEJ2249/CSA-Z605 Dynamic sled tested: 20g/30 mph-results comply with std. limits obtain pre-sale literature/lab reports Verify labeling on WTORS product (stds. compliance) Installation instructions included (and used)

Part 19: Performance Requirements -cont. wheelchair must be “successfully” crash tested at 30-mph, 20-Gs using: a surrogate four-point, strap-type tiedown an appropriate size crash dummy