The Wenzhou train collision was a railway accident that occurred on 23 July 2011, when a high-speed train travelling on the Yong-Tai-Wen railway line collided into the rear of another stationary train on a viaduct in Lucheng, Wenzhou. The two trains derailed, and four carriages fell off the viaduct. 40 people were killed, and at least 192 were injured, 12 severely. The disaster was caused by both defects in railway signal design and poor management by the railway company.