“This article introduces the mental process, analysis and evaluation applied by designers during their work on the Warsaw subway signage system project. Users’ points of view were predominant in the design procedure. Establishing the groups of potential information receivers and their needs allowed designers to define the scope of the system and areas it was to cover. Envisioning the street-train-street ‘path’ of users allowed designers to build the conceptual model that defined the design problems and solutions.” (Thanks Doug Wilson!)