I was a kid on vacation in Portugal when this happened. During that time there was strike among transport workers. So what happened was 2 trains on a single line bearing down on each other crashed.
>Foreseeing that the trains would collide, he tried to warn the guardsman on a level crossing between both stations by holding a banner or placing petards on the line; however, this action was not possible, as the train had already passed.>Around 18:37, the trains collided, while traveling approximately 100 km/h (62 mph) each. The shock destroyed both locomotives and some cars in both trains, and ignited several gasoline-fueled fires.[4] Due to the fact that the materials used in the carriages were not fireproof, the fire spread quickly, producing great amounts of smoke.>Immediately after the crash, panic spread among the passengers, who were frantically trying to get out of the carriages. Many people, among them children, got out of the wreckage, having been helped by other passengers; others burned to death, or were asphyxiated by smoke and fumes.https://www.youtube.com/watch?v=HoWcTPWnpW4