Track gauge is the same all over western and central Europe. And Europe is slowly but surely moving towards ERTMS/ETCS() for train control. Different voltages a

Track gauge is the same all over western and central Europe. And Europe is slowly but surely moving towards ERTMS/ETCS() for train control. Different voltages and frequencies are a problem but less than in the past thanks to modern electronics. https://en.wikipedia.org/wiki/European_Train_Control_System https://en.wikipedia.org/wiki/European_Train_Control_System