She said she envisioned a "black box" where the genetic sequence goes in and a simple report that can be used by hospital staff comes out.

BBC: DNA sequencing of MRSA used to stop outbreak

The crossing sequence should be automatically started by the approaching train, but the RAIB report said that "on this occasion the crossing closure sequence commenced earlier".

BBC: Barriers 'held down longer' in Somerset rail crash

What we said David in our report was we recommended a series of confidence building measures and we said that the timing and sequence of those measures are crucial, that can be decided only by the parties and they must begin that process of decision immediately.

BBC: News Online