but UK experts say they could pose unique fire safety challenges.

Depends on implementation. We already have Lion cars with batteries that can be genuinely dangerous.

Trains are large enough that moving to LifePo4 is very practical.

These do not have the self ignite and supporting risk of other li tech. They are much safer than lead acid bats.

But even with lion. I feel safer with regulated train companies staff, then personal car owners maintaining them.

Good to hear they’re not going with hydrogen trains (a pointless technology that in all circumstances is outclassed by one of the other options). Though for all but the most lightly trafficked lines, electrification would be the most economical.

I thought we were supposed to be moving to monorails world wide. That’s what Disney taught me