新晋“双万”城市，又拿下一个“增速冠军”

Core Insights - The article discusses the importance of road network density as an indicator of urban vitality and health, with a target set by the Chinese government to achieve an average road network density of 8 km/km in urban built-up areas by 2023 [1][3]. Group 1: Road Network Density - As of 2024, the average road network density across 36 major cities in China is 6.6 km/km, with only Shenzhen, Xiamen, Chengdu, Hangzhou, and Fuzhou meeting the 8 km/km standard [1]. - In 2024, cities with the highest growth in road network density include Hangzhou, Hefei, Shanghai, and Wuhan, each increasing by 0.3 km/km, while Zhengzhou, Changsha, Nanjing, and Changchun increased by 0.2 km/km [3]. - Hefei has emerged as the "growth champion" over five years, with its road network density rising from 7.0 km/km to 7.9 km/km, a cumulative increase of approximately 15.2% [6]. Group 2: Urban Vitality and Traffic Conditions - There is a linear relationship between road network density and urban vitality; higher density areas tend to attract more people and logistics, enhancing urban activity [9]. - Hefei's continuous push for technological and industrial innovation has led to a sustained increase in urban development momentum, with its resident population surpassing 10 million in 2024, making it the 18th city in China to reach this milestone [9]. - In 2024, seven cities are classified as severely congested, with average peak speeds below 18 km/h, including newly added Shenzhen and Harbin, indicating increasing traffic pressure in major cities [13].