Another set of amateurish questions from me, but I'm quite curious on a few points. (no pun intended...)
1) Is it a legal requirement for trains to have yellow cab ends, or is it simply a railway regulation, or is it just something done out of choice and not nessasarily required?
2) Is there a minimum area of yellow permitted? Cause I've seen more and more liveries in the colourful age we live in with less and less yellow on the front ends (which I find strange and odd to see personally).
3) Is the shade of yellow always the same, since looking at my model trains right now they all seem a different shade, and I was watching Trainspotting on Discovery Channel once which implied they were always given a specific pigment. I think it might be my trains that are "wrong" in which case which pigment is "right" so I can correct them?
Thank you for any replies / reading my silly thread.