根据SAE推荐规程测量的参数通常用于模拟线性范围内的方向控制性能。（线性范围是稳态横向加速度，低于该值时，方向盘角度通常可被视为与横向加速度线性相关。）但它们也可用于某些其他模拟（如主要行驶运动）、车辆和悬架的表征和比较、悬架的开发和优化，以及道路试验数据的处理。本文件适用于乘用车、轻型卡车、公路休闲车和商用车，包括非- 清晰明了。测量技术旨在应用于这些车辆，主要是对所需设施的规模进行更改。但乘用车和卡车之间确实存在一些差异，尤其是重型卡车，例如车身/车架柔韧性、悬架刚度和悬架摩擦力的差异。这些问题将在本文件或SAE J1574-2（如适用）中予以说明。

The parameters measured according to this SAE Recommended Practice will generally be used in simulating directional control performance in the linear range. (The “linear range” is the steady-state lateral acceleration below which steering wheel angle can generally be considered to be linearly related to lateral acceleration.) But they may be used for certain other simulations (such as primary ride motions), vehicle and suspension characterization and comparison, suspension development and optimization, and processing of road test data.This document is intended to apply to passenger cars, light trucks, and on-highway recreational and commercial vehicles, both non-articulated and articulated. Measurement techniques are intended to apply to these vehicles, with alterations primarily in the scale of facilities required. But some differences do exist between passenger cars and trucks, especially heavy trucks, such as differences in body/frame flexibility, suspension stiffness, and suspension friction. These will be addressed in this document or SAE J1574-2, where appropriate.