You need a dot-matrix display telling you that there are three trains arriving all one minute away (obviosuly fighting to get onto the same single line track through a tunnel). This display is 'fixed' ie never changes. Tell me... how come model railway layouts always omit little scale-model Buskers (complete with bad music - playing at 15x speed!), Muggers, Tramps, Drunks, Graffiti and tiny painted born-again-pizza splats on the platforms? Also, how come nobody stops the trains to scale? They roar into the stations doing the equivellent of an emergecy stop at the platform hurtling their passengers into a mangled heap in the front of each carriage... Real-life trains aren't fitted with inertial dampers!... Oh, before I digress, the serial LCD suggestion is best.