Like the Interstate system, the U.S. Routes (mainly) conform to a numbered grid system. Evenly numbered highways run from west to east, with low numbers in the north (U.S. 2 is the lowest) rising to the highest numbers in the south (U.S. 98 in Florida). Numbers ending in a “0″ are considered “major” routes and are given their own unique colour on the map. Odd-numbered highways run from north to south, with low numbers to the east (U.S. 1) rising to high numbers in the west (U.S. 101 along the Pacific Coast). Numbers ending in “1″ are the “major” routes.
So rad. What can I say, except re-contextualized visual data gives me a boner. Read more about Cameron’s design (not my data boner) here.
