
New Rail Alphabet
“Rail Alphabet is a typeface designed by Jock Kinneir and Margaret Calvert for British Railways. First used by them in signing tests at London’s Liverpool Street Station, it was then adopted by the Design Research Unit (DRU) as part of their comprehensive 1965 rebranding of the company.
In 2009, a newly-digitised version of the typeface was publicly released. Created by Henrik Kubel of A2/SW/HK in close collaboration with Margaret Calvert, New Rail Alphabet features six weights: off white, white, light, medium, bold and black, with non-aligning numerals, corresponding italics and a set of Eastern European characters.”
(Wiki)
And like anything new, its for sale. I mean really not much of a big difference but I guess the subtleties make the difference in alignment.