1. Side-facing wheelchair after a frontal impact test

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

3. 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

4. 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

5. 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

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

7. WC/19: Design Requirements
Must minimize hard sharp edges

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

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

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

11. 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.

12. Part 19: Performance Requirements
Frontal 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

13. 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.

14. 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 scheduled for completion in 2004
ISO

15. 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

16. ISO 10542-3 Docking Systems -UDIG Adapter Spec.

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

18. 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??

19. 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

20. 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

21. 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

22. 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

23. 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

24. 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)

25. 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.

26. Wheelchair Transport Standards
More transport standards info:
Click on: W/c Transport Stds. Section
FAQs on Transport Safety (>50)
Click on: FAQ

27. Thank You!

28. Not Used in Presentation

29. Powered Docking Tiedown for Disabled Drivers

30. 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

31. 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.

32. 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

33. 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

34. 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)

35. 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