Ho Chi Minh City’s Metro Line No. A train on Ho Chi Minh City’s first metro line stops at Suoi Tien Station in Thu Duc City. A train on the first metro line in Ho Chi Minh City undergoes a test run at below 50 kilometers per hour. Ho Chi Minh City’s Metro Line No. A train on the first metro line in Ho Chi Minh City undergoes a test run at below 50 kilometers per hour.