On the morning of June 3, 1998, the Munich-Hamburg Inner City Express train derailed near the village of Eschede, Germany, while traveling at 124 mph (200 km/h). One of the train cars hit a bridge, causing it to collapse. The cars behind jackknifed into the wreckage, while the front part of the train detached, coming to a stop well past the Eschede station. More than 100 people died as a result of the crash. Investigators later determined that the crash had been caused by what single problem? Discuss
Source: The Free Dictionary