"Spider map" can demystify bus service
from Greater Greater Washington by Peter Dunn
...
Rather than attempt to communicate the entire route network, a spider map only shows the routes that serve stops within walking distance. Like London's famous Tube map, it also forgoes the geographic accuracy of a street map for a simplified diagram of connections and destinations. It answers the questions "where can I go from here?" and "what bus do I take to get there?" without adding unnecessary information.
... http://greatergreaterwashington.org/post.cgi?id=11965
What's Related