Glad to hear most of our Belgian contingent is OK; condolences to the victims and families.

That was some intense impact, knocking some carriages off their wheel-frames. I read that investigation is already on-going, so I guess we'll get more details later, but: does anyone know how the "red light" signal is transmitted? Merely visually to the train "driver", or is there also sound or a dashboard flashing light or something else to alert the engineer?

We had a pretty bad derailment here in California a few months back, where it was found the engineer missed a red-light, including a dashboard buzzer, while he was busy texting on his cellphone (he's in jail now).