On November 20th, the CRH380 comprehensive inspection vehicle was operating on the Tuojiang Special Bridge in Ziyang. On that day, the Chengdu-Chongqing High-Speed Railway began its full-line connection test. The CRH380 comprehensive inspection vehicle conducted two round-trip tests at a speed of 300 kilometers per hour between Chengdu East and Chongqing North, and rechecked the geometric state of the catenary.
