Visual Perception Feature Hierarchy

http://www.bart.gov/stations/

The picture above is the BART map.  For those who has ever lived in the Bay Area or lived close to it should know what the BART is.  The bart map uses simple colors and is easy to look at.  Unlike the New York subway route map, the BART map is not confusing at all.  It displays the hierarchy features with different color routes.  To make it pop out, they disregarded streets or highway that are shown on normal maps.  They just made the Bay Area map into a grey silhouette, placed their colorful routes onto the map, and label the stops they have.  To make sure people knows what trains there are and which trains they can take, they enlarge and bolded the text for the last destination.  They placed medium sized white dots on the routes to display transfer points.  I like this map because it is simple and they only show what is necessary.  Their map looks organized and the colors are well used.  It is a good 2 dimensional design for maps.