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Wheelchair Transportation Safety > Group D: Wheelchair Seating – RESNA WC20 and ISO 16840-4 Standards Frequently Asked Questions
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Group D: Wheelchair Seating – RESNA WC20 and ISO 16840-4 Standards Frequently Asked Questions

  • Question D-1: What is the scope of the requirements in the wheelchair seating standards (RESNA WC20 and ISO-16840-4)?
  • Question D-2: What is the difference between occupant-restraint belts and positioning or postural belts?
  • Question D-3: Do postural and positioning belts present a hazard or injury risk if worn while a wheelchair-seated occupant is traveling in a motor vehicle?
  • Question D-4: Is it safe to use other types of head-restraint and support devices when traveling in a motor vehicle?
  • Question D-5: What if I need to use an after-market customized seating system that has not been crash tested?

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