The ceremony of starting the implementation of the Tehran Metro Line 9 project was held on Wednesday, May 16, 1403, in the framework of the 121st Campaign of Hope and Honor, with the presence of the Mayor of Tehran, Mr. Dr. Alireza Zakani, the Deputy Minister of Transportation and Traffic of Tehran Municipality, Mr. Mohsen Hormozi, the CEO of Tehran Metro Company, Mr. Masoud Dostri, the CEO of Sabir International Company, the Mayor of District 22, and a group of city managers. The construction operations of Tehran Metro Line 9, which starts from Chitgar and continues to Dolatabad, were held.