关键词: 商用车；直接视野；物理实践；UN R167.01

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