Line 1, Line 2: the designed maximum speed is 80km/h, and most sections can reach \ x0d \ \ x0d \ Line 3: the designed maximum speed is 120km/h, which can only be reached in the section from Han Xi Changlong to Shiqiao, but it is smaller in the sections from Tiyu West to Shipai Bridge and Dinggang to Huashi. Line 4: The designed maximum speed is 90km/h, and the current maximum speed of most sections is 85km/h.. However, due to the small radius of the bend from Shijiazhuang to the waterfront, the speed limit is 60km/h, the speed limit is 60km/h at the junction of the underground part and the ground part of the newly-built Shijiazhuang-Shijiazhuang section, and the speed limit is 15km/h at the section near the south of the Higher Education Meijia Center.