本SAE推荐实践定义了系统和部件功能、测量指标和测试方法，用于评估在已知操作环境中用于26000磅GVWR以下拖车的轮胎压力系统的功能和性能。 本文件适用于26000磅GVWR以下的所有牵引拖车。牵引拖车的示例是休闲车辆旅行拖车和第五轮、多用途拖车、货物拖车、牲畜拖车、平板拖车、船拖车和雪地车拖车。这些拖车可以配备一个、两个或三个车轴，每个车轴支撑两个或四个轮胎。 建议这些系统解决原始设备制造商最初安装在拖车上的所有使用中的轮胎。该推荐做法也可应用于同时覆盖牵引车和挂车的外部TPMS。 本文件将重点介绍监测型轮胎压力系统。

This SAE Recommended Practice defines the system and component functions, measurement metrics, and testing methodologies for evaluating the functionality and performance of tire pressure systems for use on trailers under 26000 pounds GVWR within the known operating environments. This document is applicable to all towed trailers under 26000 pounds GVWR. Examples of towed trailers are recreational vehicle travel trailers and fifth wheels, utility trailers, cargo trailers, livestock trailers, flatbed trailers, boat trailers, and snowmobile trailers. These trailers can be equipped with one, two, or three axles with each axle supporting either two or four tires. These systems are recommended to address all tires in service as originally installed on a trailer by the OEM. This recommended practice can also be applied to external TPMS that also cover tow vehicles and trailers simultaneously. This document will focus on tire pressure systems of the monitoring type.