本SAE推荐实施规程适用于由轮椅系紧系统或装置和约束轮椅乘客系统或装置组成的WTORS。它规定了WTR的设计要求、试验方法和性能要求、制造商对安装人员和用户的说明要求，以及产品标记和标签要求。本文件特别强调了WTORS在48 km/h、20 g正面碰撞中动态性能的设计要求、试验程序和性能要求。它还规定了带式轮椅系紧装置调整装置处织带滑动、轮椅系紧装置部分但无效接合以及可被认为有效接合的系紧部件的试验程序和性能要求。 附录F包括关于WTORS的其他建议，这些建议将增强WTORS的设计、性能、安装和使用，但目前不需要遵守本文件。本文件的内容适用于与坐在轮椅上的前向儿童和成人一起使用的WTOR，也适用于持照机动车的乘客和驾驶员，以及用于公共和学校交通的机动车乘客。尽管本文件主要关注使用四点轮椅系紧系统的WTR，但除非另有规定，本文件的规定目前适用于遵守本文件的要求。本文件内容适用于与forward一起使用的WTOR- 面向坐在轮椅上的儿童和成人，适用于持有个人驾照机动车的乘客和驾驶员，以及用于公共和学校交通的机动车乘客。尽管本文件主要关注使用四点轮椅系紧系统的WTR，但除非另有规定，本文件的规定适用于所有类型的WTR，包括使用对接式轮椅系紧系统的WTR。虽然本文件的主要重点是由制造商包装为完整系统或套件的WTORS，但人们认识到，WTORS市场的很大一部分由单独的WTORS组件和子组件组成，如出售给公交车制造商的锚固轨道，或出售给运输提供商的固定和约束组件。 此类WTORS组件和子组件的制造商可以证明其设备符合本文件的要求，前提是:a.拟用于创建WTORS的子组件和组件符合本文件的所有适当要求；b.单独出售的组件和子组件按照5.5提供了说明，其中，“兼容”一词指一起测试以符合本文件的要求。

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 manufacturer's 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 ineffective 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 transportation. 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 applt, 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 transportation. 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.