Of course the new blue signal aspects in the Dawlish area should give early warning if breaking waves are likely.
Voyagers can then hide from the scary waves.
IETs▸ can see the blue signal and automatically select "Dawlish protective mode" which is similar to "wash mode"
If an IET enters Dawlish protective mode more than twice a year, then an extra payment is due to Hitachi on account of the extra wear.
Diagrams must therefore be planned such that any unit that has already been subjected to two Dawlish events is not avoidably subjected to a third.
https://www.dawlishbeach.com/2019/04/dawlish-line-gets-the-blue-signal-to-proceed/ The article in the link says:
These signals have been trialed and put into services elsewhere in the World. Most notably in Luxembourg where drivers have stated the coastal line is now a much safer environment to drive a train.
But Luxembourg has no coast
But then the article was dated 1st April 2019!!!!