Voltage changeover (1)

A view on the actual voltage changeover of Bierbeek , located between KP (kilometerpaal ; milepost) 33.2 and 33.3 of HSL2.The white sign with the black bar informs the driver to lower the pantographs.(Normally this is automatically done by the TBL-2 system , but the signalling is meant as an eventual backup).The blue diamond-shaped signs inform the driver he must must switch the trains power supply from 25000V~ to 3000V=.This must be done manually.