1.1 本试验方法提供了22 250-N[5000 lb]替代试验车辆使用的冲击速度范围。本试验方法确定了渗透性能额定值的范围。最终用户将负责在本试验方法中确定适当的车辆碰撞速度和穿透性能额定值，以满足其特定需求。 1.1.1 此外，最终用户可以根据本文所述的测试方法为车辆保护装置指定认证等级。测试参数标准化，以达到通用车辆重量，增强测试的真实性和可复制性，并产生统一的额定值。 1.1.2 车辆保护装置的选定参考点旨在保护受保护侧的资产。 因此，参考点可能与其他标准不同。 1.2 单位- 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 1.3 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。 1.4 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 本试验方法提供了一个程序，用于确定承受低速车辆冲击的车辆保护装置的渗透等级。了解渗透等级可使最终用户能够为现场特定条件选择适当的保护装置。 5.2 防护装置渗透额定值并不意味着装置将在所有现场条件、进场路线和地形下按额定值运行。此外，该试验方法要求仅在特定冲击位置对试样进行试验，因此，并非所有冲击位置都可以进行渗透等级的测试和验证。其他冲击位置可能提供不同的穿透等级。

1.1 This test method provides a range of impact speeds to be used with a 22 250-N [5000 lb] surrogate test vehicle. This test method establishes a range for penetration performance ratings. End users will be responsible for identifying the appropriate vehicle impact speed and penetration performance ratings in this test method that satisfies their specific needs. 1.1.1 In addition, end users may assign certification ratings for vehicle protective devices based on the test methodologies described herein. Test parameters are standardized to arrive at a common vehicle weight, enhance test realism and replication, and produce uniform rating designations. 1.1.2 The selected reference points for the vehicle protective devices are intended to protect assets on the protected side. Therefore, points of reference may vary from other standards. 1.2 Units— The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.3 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. 1.4 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 provides a procedure to establish a penetration rating for vehicle protective devices subjected to low-speed vehicle impact. Knowing the penetration rating provides the end user with the ability to select an appropriate protective device for site-specific conditions. 5.2 The protective device penetration rating does not imply that a device will perform as rated in all site conditions, approach routes, and topography. Also, this test method requires that the specimen only be tested at a specific impact location and, therefore, not all locations of impact can be tested and validated for a penetration rating. Other impact locations may provide different penetration ratings.