1.1 本试验方法涵盖了测量乘用车和轻型卡车轮胎在冰雪覆盖表面上直线行驶时的行驶牵引力的程序。 1.2 本试验方法利用专用的、装有仪表的四轮后轮驱动试验车辆，以及装有专门仪表的驱动轴，测量作用在单个驱动试验轮胎上的前后力和垂直力。 1.3 该试验方法适用于研究和开发目的，其中在单个系列试验中比较轮胎。它们可能不适用于法规或规范验收，因为获得的值不一定在秩或绝对牵引性能水平上与在其他环境条件下在其他表面或额外使用后在同一表面上获得的值一致或相关。 1.4 以国际单位制表示的数值应视为标准。通常，应使用N和kN作为力的单位。本标准可以使用kgf作为力的单位，以适应负载和压力表的使用，如本标准常用的其他国内和全球标准所示。括号中给出的值仅供参考。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 本试验方法描述了在冬季雪地和冰面环境中评估轮胎性能特性的技术。下文提及雪时，视情况暗示冰。 5.2 测量值量化了驱动扭矩下轮胎的动态纵向牵引特性。动态牵引性能是在根据规定的测试程序准备的雪地表面上获得的，并试图量化轮胎在集成到车辆环境系统中时的性能。改变这些环境因素中的任何一个都会改变后续测试运行中获得的测量值。 5.3 本试验方法仅针对冰雪表面的纵向行驶牵引性能。参考测试方法 F1572 用于雪或冰上或两者上制动和横向牵引性能的试验方法。

1.1 This test method covers a procedure for measuring the driving traction of passenger car and light truck tires while traveling in a straight line on snow- or ice-covered surfaces. 1.2 This test method utilizes a dedicated, instrumented, four-wheel rear-wheel drive test vehicle with a specially instrumented drive axle to measure fore-aft and vertical forces acting on a single driven test tire. 1.3 This test method is suitable for research and development purposes where tires are compared during a single series of tests. They may not be suitable for regulatory statutes or specification acceptance because the values obtained may not necessarily agree or correlate either in rank order or absolute traction performance level with those obtained under other environmental conditions on other surfaces or the same surface after additional use. 1.4 The values stated in SI units are to be regarded as the standard. Ordinarily, N and kN should be used as units of force. This standard may utilize kgf as a unit of force in order to accommodate the use of load and pressure tables, as found in other standards both domestic and global that are commonly used with this standard. The values given in parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method describes a technique for assessing the performance characteristics of tires in a winter environment on snow and ice surfaces. When snow is referred to hereafter, ice is implied as appropriate. 5.2 The measured values quantify the dynamic longitudinal traction properties of tires under driving torque. Dynamic traction properties are obtained on snow surfaces prepared in accordance with the stated test procedures and attempts to quantify the tires' performance when integrated into a vehicle-environmental system. Changing any one of these environmental factors will change the measurements obtained on a subsequent test run. 5.3 This test method addresses longitudinal driving traction properties only on snow and ice surfaces. Refer to Test Methods F1572 for test methods for braking and lateral traction properties on snow or ice, or both.