If you have typeface nerdish tendencies like me, then more about Network Rail's '
NR» Brunel' can be read
here. (.pdf download)
Interesting reading - well, I think so anyway.
The pictograms (p12) are intriguing: A car with a key over it means car hire - obviously. Cycle hire however is a cycle with a pound sign over it... though comparing this with the 'Bureau de Change' sign you might think it was somewhere to buy or sell a bike. A suitcase with a key over it is 'luggage locker' - or does it mean luggage hire? Incidentally I am not criticising these signs - I just find it interesting that the same graphical elements can have such different meanings.
If you want an example of how
not to do signage, look no further than this excellent treatise on the less-than-excellent signage used by Moto motorway services:
http://www.cbrd.co.uk/indepth/motoservices/Now you've drawn my attention to it, I'm amazed how old-fashioned the 'Rail Alphabet' font looks now - I can't help associating it with austerity, dereliction and closure. You may have happier memories! Oddly, the 'Transport' font (used on post-Worboys road signs) which has been around for about the same length of time but doesn't look so dated to me...