Lagny-Pomponne Railroad Disaster

Lagny, France 23 December 1933. The Paris - Strasbourg Express 25 bis left Paris close behind the Paris - Nancy train which had been severely delayed due to the foggy conditions that prevailed that evening. Near Lagny, about 17 miles (23Km) from Paris, the Strasbourg express having overun signals, ploughed into the rear of the Nancy train. The resulting carnage was one of France's worst rail disasters.

http://danger-ahead.railfan.net/accidents/lagny...