This is a cool art project idea (if I do say so myself).  

“Graham Coreil-Allen will create five temporary “crosswalks” demonstrating some of the casual paths that pedestrians take when navigating various intersections in the northwest section of Bushwick. Coreil-Allen will also install interactive posters around the crosswalk sites and other locations. The posters will consist of a neighborhood map with a detail of particular intersections, and will posit this question: “How did you get here?” and “How did you cross the street?”. Each map will also include a marking pen so that passers-by may answer the questions. Coreil-Allen will periodically collect these maps and use the participants responses as plans for installing additional crosswalks.” (from the write-up on ArtCal)

Find out more at ArtCal.