Signal Passed At Danger on main tracks

A signal overtaking consists of passing a signal with a closed appearance without authorization. This dataset shows the number of SPADs ("Signal Passed At Danger") on the main tracks of the network. Crossing a red signal is not always a source of danger. By analogy, it is easy to compare this problem with that of motorists running red lights, thereby exposing themselves to a collision with vehicles entering the same junction. In the railway world, this junction is called "the first dangerous point" when a train that has passed the closed signal can collide with another train.