SAE J2249-1999
Wheelchair Tiedown and Occupant Restraint Systems for Use in Motor Vehicles

Standard No.

SAE J2249-1999

Release Date

1999

Published By

Society of Automotive Engineers (SAE)

Latest

SAE J2249-1999

Scope

This SAE Recommended Practice applies to WTORS comprised of a system or device for wheelchair tiedown and a system or device for restraining the wheelchair-seated occupant. It specifies design requirements, test methods, and performance requirements for WTORS, requirements for manufacturers instructions to installers and users, and requirements for product marking and labeling. This document places particular emphasis on design requirements, test procedures, and performance requirements for the dynamic performance of WTORS in a 48-km/h, 20-g frontal impact. It also specifies test procedures and performance requirements for webbing slippage at adjustment devices of strap-type wheelchair tiedowns, and for partial but ineffecte engagement of wheelchair tiedowns, and tiedown components that could be perceived to be effectively engaged. Appendix F includes additional recommendations for WTORS that will enhance the design, performance, installation, and use of WTORS, but which are not, at this time, required for compliance with this document. The contents of this document apply to WTORS used with forward-facing wheelchair-seated children and adults, and apply to passengers and drivers of personally licensed motor vehicles as well as to passengers of motor vehicles used in public and school transporation. While much of the focus of this document is on WTORS that use four-point wheelchair tiedown systems, unless otherwise specified, the provisions of this document are applicable to all types of WTORS, including those that use docking-type wheelchair tiedowns. While the primary focus of this document is a WTORS that is packaged by the manufacturer as a complete system or kit, it is recognized that a significant portion of the WTORS market consists of separate WTORS components and subassemblies, such as anchorage track that is sold to the bus manufacturer, or securement and restraint assemblies that are sold to the transit provider. Manufacturers of such WTORS components and subassemblies may certify their equipment as being in compliance with this document provided that: a. the subassemblies and components intended to be used together to create a WTORS meet all the appropriate requirements of this document, and b. the separately sold components and subassemblies are provided with instructions in accordance with 5.5, where the word compatible means tested together to comply with this document.

SAE J2249-1999 Referenced Document

• ISO 10542-1 Technical systems and aids for disabled or handicapped persons.Wheelchair tiedown and occupant-restraint systems.Part 1: Requirements and test methods for all systems; Technical Corrigendum 1*， 2013-09-01 Update
• ISO 10542-2 Technical systems and aids for disabled or handicapped persons - Wheelchair tiedown and occupant-restraint systems - Part 2: Four-point strap-type tiedown systems*， 2001-07-01 Update
• ISO 7193:1985 Wheelchairs; Maximum overall dimensions
• SAE J128-1994 Occupant Restraint System Evaluation - Passenger Cars and Light-Duty Trucks
• SAE J140-1995 Seat Belt Hardware Test Procedures
• SAE J141-1995 Seat Belt Hardware Performance Requirements
• SAE J1834-1991 Seat Belt Comfort, Fit, and Convenience R(2000)
• SAE J2094-1992 Vehicle and Control Modifications for Drivers with Physical Disabilities Terminology@ Information Report (June 1992)
• SAE J211/2-1995 Instrumentation for Impact Test—Part 2: Photographic Instrumentation
• SAE J383-1995 Motor Vehicle Seat Belt Anchorages - Design Recommendations
• SAE J850-1996 BARRIER COLLISION TESTS

SAE J2249-1999 history

• 1999 SAE J2249-1999 Wheelchair Tiedown and Occupant Restraint Systems for Use in Motor Vehicles
• 1996 SAE J2249-1996 Wheelchair Tiedown and Occupant Restraint Systems for Use in Motor Vehicles