1.1 意图 本标准中包含的两种测试方法定义了验收测试，用于根据交通监控设备（TMD）执行的功能、提供的数据、所需的数据准确性以及设备运行条件来评估其性能。无论何时购买、安装TMD或需要进行性能验证，都建议进行验收测试。测试是在现场环境中进行的，并导致测试中TMD的接受或拒绝决定。 1.2 例外情况-- 测试方法的例外情况和选项可包括在用户提出的任何衍生测试方法中，作为TMD采购过程的一部分。卖方可以在回应投标邀请时提供例外情况和选项。 1.3 单位-- 以英寸磅为单位的数值应视为标准。 括号中给出的值是到SI单位的数学转换， 2. 其仅提供用于信息而不被认为是标准的。 1.4 以下安全程序适用于章节 6. 和 7. ，描述了验收测试方法的细节。当公众可进入的试验场地（例如街道或高速公路）用于TMD的验收试验时，应获得对试验期间使用的交通控制程序具有管辖权的公共当局的批准。 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 Purpose— The two test methods contained in this standard define acceptance tests for evaluating the performance of a Traffic Monitoring Device (TMD) according to the functions it performs, the data it provides, the required accuracy of the data, and the conditions under which the device operates. Acceptance tests are recommended whenever a TMD is purchased, installed, or performance validation is desired. The tests are performed in a field environment and result in an accept or a reject decision for the TMD under test. 1.2 Exceptions— Exceptions and options to the test methods may be included in any derivative test method presented by a user as part of the procurement process for TMDs. Sellers may offer exceptions and options in responding to an invitation to bid. 1.3 Units— The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units, 2 which are provided for information only and are not considered standard. 1.4 The following safety procedures apply to Sections 6 and 7 , which describe the details of the acceptance test methods. When a test site accessible by the public (for example, a street or highway) is used for the acceptance test of the TMD, obtain approval from the public authority having jurisdiction over the site for the traffic control procedures to be used during the test. 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.