"Never mistake legibility for communication." ~David Carson
I find it remarkable that Carson self taught himself and has come to be such a popular face in the graphic design field. His work (second picture) evokes so much information in just one space. Your eye is drawn to the larger letters to say "it's your world", although some letters are lost in the background, it is still legible. Obviously sticking to his quote.
The first picture is like Carson's work, I believe with a more modern spin and seems to be only for display rather than communication. There is no type, but I get an urban feel from it. With the metal from what seems to be the side of a railroad car, arrows representing street signs, and graffito that is normally found on railroad cars. It uses the same range of appealing colors, but in a more modern way.
Pictures are from: chasryder.com and coolchaser.com