Core Viewpoint - The Shanghai government has announced a policy to restrict the operation of National IV diesel cargo vehicles within the G1503 Shanghai Ring Expressway starting from October 15, 2025, as part of efforts to improve air quality and traffic management [1] Group 1: Policy Details - The restriction will apply to all roads within the G1503 Shanghai Ring Expressway, excluding the expressway itself and the ground roads projected under the elevated sections [1] - The policy is set to be enforced by the Shanghai Municipal Traffic Management Department, which will handle violations according to the relevant laws [1] Group 2: Implications - This policy is likely to impact logistics and transportation companies operating diesel cargo vehicles in the region, potentially leading to increased operational costs or the need for fleet upgrades [1] - The move aligns with broader environmental goals, indicating a shift towards stricter regulations on vehicle emissions in urban areas [1]