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 accident occurred between the border stations of Hettange-Grande (France) and Bettembourg (Luxembourg), near the Lorraine area of Zoufftgen, on a double track section.