In a long excerpt from O'Reilly's recent book "Beautiful Visualization", KickMap designer Eddie Jabbour talks about his process for redesigning the NYC Subway map.
While I felt that it was important to show certain shapes aboveground, I also felt that it was important to leave out certain pieces of belowground information. There are several places where the subway tunnels cross and overlap each other beneath the surface. This may be important information for city workers or utility companies trying to make repairs, but for the average commuter, showing these interactions just creates visual noise. I tried to reduce that noise by cleanly separating the lines on the map so they don't overlap. Consider the different depictions of the 4 line and the 5 line in the Bronx; sure, the MTA's paths may be accurate, but they're also confusing, and riders don't really need to see those particular details to understand where they're going.
(Via @TheJames)
