In order to truly reflect the actual emission level of vehicles, the Real Driving Emission (RDE) test is used as a supplementary test procedure in the light vehicle emission regulations. In the actual test process, the road emission results are significantly affected by driving behavior, but the current regulatory boundary conditions aim to ensure the standardization of the test process, only to judge the intensity of driving behavior in the test process through route dynamics verification and window weighting coefficient. In order to explore the validityof current regulations in judging the severity of driving behavior, three light-duty gasoline vehicles meeting China 6 were selected to conduct RDE comparative tests with different driving behaviors.The results show that the current regulations do not strictly limit the intensity of driving behavior during the test, resulting in very different RDE test results under different driving behaviors, and may even cause test results to exceed regulatory limits. By analyzing the distribution characteristics of each window v·a_pos[95], it is recommended to use the window v·a_pos[95] to judge the severity of driving behavior and to correct the test results.