They point the train in the right direction ??? <shrug>
I'm really, really, really not going to get into a debate over the two versions of English.
It is what it is. Neither is right. Neither is wrong.
They're valves to me, and I'm quite happy with them being tubes to you.
Courgettes to me, zuchini to you.
Aubergine to me, eggplant to you.
etc. etc. etc.