1.1 本实践包括使用气动道路管来检测承载车辆车轴的通过，作为道路交通监控的一部分。 1.2 本规范仅适用于用于检测道路上承载车轴的气动道路管。 1.3 以SI单位表示的值应被视为标准。括号中给出的英寸-磅单位仅供参考。 1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.5 本国际标准是根据世界贸易组织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的标准化原则制定的贸易壁垒委员会。 ======意义和用途====== 3.1 本实践涉及使用带有记录装置的气动管道记录交通特性。该实践为政府机构和私营公司在道路和道路交通管理中的专业判断提供了信息。 3.2 交通监控对于人员和货物的安全高效流动非常重要。这种做法的目的是确保交通监测程序产生的交通数据和汇总统计数据足以满足多样化和关键的交通信息需求。

1.1 This practice covers the use of pneumatic road tubes to detect the passing of load-bearing vehicle axles as part of roadway traffic monitoring. 1.2 The practice applies only to pneumatic road tubes used for the detection of load-bearing vehicle axles on a roadway. 1.3 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. 1.4 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. 1.5 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 ====== 3.1 This practice addresses the recording of traffic characteristics, using pneumatic tubing with recording devices. This practice provides information for use with professional judgment by governmental agencies and private firms in the management of roads and roadway traffic. 3.2 Traffic monitoring is important to the safe and efficient movement of people and goods. The purpose of this practice is to ensure that traffic monitoring procedures produce traffic data and summary statistics that are adequate to satisfy diverse and critical traffic information needs.