One train was a Class 2200 double-decker passenger train of the Chemins de Fer Luxembourgeois (CFL), running on the Métrolor service (TER Lorraine) from the city of Luxembourg to Nancy, France. The other was an SNCF freight train composed of 22 wagons on the Bâle – Thionville – Bettembourg route. They were involved in a head-on collision. This type of accident, called ("Nose to Nose") in French railway jargon, is relatively rare and often fatal. One of the most fatal head-on collisions in France was the 1985 Flaujac train collision, which left 35 dead and 120 injured. The most recent accident of this kind happened on the Tende line on 27 January 2003 where a French and an Italian train collided, killing both drivers.