WTORS Knowledge Centre
The Estraints WTORS Knowledge Centre brings together practical guidance on wheelchair securement, occupant restraint, wheelchair transportation standards, restraint geometry, inspection and training.
Start with the WTORS fundamentals
- What Is WTORS?
- How to Secure a Wheelchair in a Vehicle
- What Is a Four-Point Wheelchair Tiedown?
- Wheelchair Docking vs Four-Point Tiedowns
- Five-Check Wheelchair Securement Checklist
Wheelchair occupant restraint & geometry
- Wheelchair Shoulder-Belt Geometry & Upper Anchorage Position
- Wheelchair Restraint Calculator
- Wheelchair Restraint Reports
Wheelchair transportation standards
- Compare Wheelchair Transportation Standards
- ISO 10542-1
- AS/NZS 10542.1
- RESNA WC18
- WC18 vs WC19
- ISO 7176-19 / WC19
- SAE J2249
- CSA Z605
- WTORS Compliance Guide
Wheelchairs used in vehicles
- Are All Wheelchairs Safe to Use as Seats in Vehicles?
- Transporting Powered Wheelchairs
- Wheelchair Space and Clearance Requirements
- Wheelchair Transport Safety Principles
Inspection & fleet operation
- When Should WTORS Belts and Components Be Replaced?
- WTORS for Community & Disability Transport Fleets
- Public Transit vs WAV Securement
For WAV builders, installers & engineers
Training
Build WTORS knowledge across operators, installers, technical teams and supervisors.
Glossary
New to wheelchair transportation terminology? Use the WTORS Glossary.
All articles
Browse the full Estraints article archive.
Content status: Updated by the Estraints Technical Team on 24 September 2026. See how Estraints develops and reviews technical guidance.