I thought it was a legal requirement that all mainline trains except Steam trains needed Yellow fronts in the UK, however in all the pictures I have seen of Crossrail trains, I've seen none with Yellow Fronts.
Is Crossrail not going to be mainline? Have the changed the law or something?
probably
perhaps
>>954198
Crossrail is using its own tracks for the whole line.
>>954198
Yellow fronts isn't a law, it just a regulation of Network Rail. Crossrail isn't using NR tracks, so they can paint their fronts whatever.