[fransje26]

And what do you want to do with a high speed train?

They are equipped with a dead man switch, and will shutdown pretty much immediately if not responded to in time. Case in point: the high speed train driver that committed suicide by jumping out of his train two days ago. (May he rest in peace.) And ultimately, they are computer monitored, and will be shutdown if a given set of security procedures are not respected.

French trains have had bombs explode in them in the past, and did not derail. Some have hit landslides at full speed, and did not derail.

High-speed trains are fine, no need for airport-like obnoxious levels of "security".