Not even close to being that good, but parts of the Frankfurt Metro have basic station maps on the platforms.

Of-Marktplatz: https://dl2.pushbulletusercontent.com/lxmCMsRFcz6eOy53QqHHzk...

Of-Kaiserlei: https://dl2.pushbulletusercontent.com/BEJXV2Cp8UDZ1dbbXVRPZe...