宜攀高速多个路段通车，从攀枝花2小时到宁南

Group 1 - The G4216 Yibin to Panzhihua Expressway (referred to as "Yipan Expressway") has completed the construction of several key sections, significantly reducing travel time from 5 hours to 2 hours for the Ningnan to Panzhihua segment [1][3] - The expressway features a dual four-lane design with a speed limit of 80 km/h, connecting various regions seamlessly and enhancing the local transportation network [3][6] - The total length of the Ningnan to Panzhihua segment is 166.167 kilometers, while the Jinyang to Ningnan segment measures 105 kilometers, facilitating better access to the surrounding counties and cities [3][10] Group 2 - The Yipan Expressway is a crucial part of the national expressway network, with a total investment of 934.3 billion yuan, making it the largest single investment highway project in China [10] - The project faces significant construction challenges due to complex terrain and geological conditions, including crossing four world-class hydropower reservoir areas and multiple seismic fault zones [10] - The expressway aims to create a "1-hour economic circle" between Panzhihua and southern Liangshan counties, promoting economic integration and enhancing logistics for local industries [6][8]