SEOUL — A collision on Seoul’s busiest subway line left 172 people injured, with passengers forced to evacuate along train tracks. There were no fatalities.An eastbound train collided with a stationary train in Sangwangsimni station in central Seoul, South Korea, officials from the subway operator and fire service said in a briefing at the station. There were no fatalities and all injuries are classified as minor following the collision, which didn’t cause a fire, the officials said.The incident comes as criticism mounts over the government’s handling of Korea’s worst maritime disaster in four decades, with newspapers pointing to a lax safety culture and unenforced regulations on the nation’s transport networks. President Park Geun Hye pledged to establish a new department under the prime minister’s office to handle disasters following the Sewol ferry sinking on April 16, which left more than 300 people dead or missing.“I don’t know what’s going on with this country,” said Lee Young Sook, in her 60s, who was forced to travel by bus to Sindang, one station before the site of Friday’s collision, because train services were disrupted. “It’s unbelievable that this has happened so soon after the sinking.”The train collision happened at about 3:32 p.m., Seoul Metro official Jeong Soo Young told reporters at the scene. The operator is still investigating and the incident may have been caused by a red stop light coming on too late, Jeong said, citing the driver of the moving train.