I have always been appreciative of the subways having signs that list each station for the train line and which carriage to be in for easy connections to other lines, as well as for escalator and elevator access. I have often complained that JR don't do the same. Someone has heard my complaints!
JR have introduced these signboards for the Yamanote loop line that runs in central Tokyo, which I assume (hope) means they will be introducing it to other lines eventually. (To be fair to JR though, there are usualy a lot more stations on a JR line compared with a subway line.)
Simple things make me happy :)
The photo was taken on my mobile, will endeavour to replace it with a better one.