Abstract: As the latest technical specification of the United Nations for the direct vision safety of commercial vehicles, Uniform Provisions Concerning the Approval of Motor Vehicles with Regard to Their Direct Vision (UN R167.01) is characterized by complex technical definitions, numerous testing steps, and a lack of commercial testing tools. This article, combining theoretical analysis, systematically elaborates on the core definitions, physical test principles and procedures of UN R167.01, and constructs a test implementation framework that can directly guide engineering practice. Moreover, based on the self-developed testing equipment of this center, it provides a test case for the direct vision of commercial vehicles. After testing, the nearside visible volume of acertain vehicle model is 5.74 m 3 , the front visible volume is 10.17 m 3 , the subsection front visible volume is 3.12 m 3 , the offside visible volume is 10.72 m 3 , and the total visible volume is 26.63 m 3 . The test results show that the direct vision testing equipment for commercial vehicles independently developed by our center can effectively complete the UN R167.01 regulation test, providing testing support for Chinese commercial vehicle products to meet international market access requirements.

Key words: commercial vehicle; direct vision; practical application; UN R167.01

摘要： 《关于机动车直接视野审批的统一规定》（UN R167.01）作为联合国针对商用车直接视 野安全的最新技术规范，针对该法规技术定义复杂、测试步骤多和无商业化测试工具等问题， 文章结合理论分析，系统性阐述 UN R167.01 的核心定义和物理试验原理及流程，构建可直接 指导工程实践的试验实施框架，并基于该中心自研测试设备给出商用车直接视野测试案例。 经测试某车型近侧可视体积为 5.74 m 3，前方可视体积为 10.17 m 3，分段前方可视体积为 3.12 m 3，远侧可视体积为 10.72 m 3，总可视体积为 26.63 m 3。结果表明，该中心自研的商用 车直接视野测试设备能有效完成 UN R167.01 法规测试，为中国商用车产品满足国际市场准入 提供测试支撑。

关键词: 商用车；直接视野；物理实践；UN R167.01