The typeface FF Transit is a highly legible design that works well for readers who need quick orientation while en route. Made to blend aesthetic quality with legibility, it was originally developed by MetaDesign in Berlin for official use by the Berlin Public Transportation Services (BVG) and Düsseldorf Airport. Based on the proportions of Frutiger (licensed from Linotype), it was freshly drawn in a narrow version with original italics. The design included many variants made to meet the rigorous standards of a complex signage system. Styles marked Front and Back are subtle variations which compensate for the visual distortion that appears on illuminated signs which are either backlit or lit from the front with external lighting. These variants can also be useful in compensating for the weight difference perceived by setting white text on a black background.