Driving times from San Mateo County Forensic Lab to the rest of the bay area. Numbers are in minutes. Bright splotches are multiples of 10 minutes. Speed limits for each road class are from the TMRS project and might be experimental. There's a suspicious road classification on Willow Road at the east end of the Dumbarton Bridge that might be throwing off all the Fremont times. Code is in CVS at the tag 'sanmateo1'.
I made plots of driving times from my house, with every multiple of 5 minutes highlighted in yellow, and every minute alternating between light and dark. Red increases gradually.
Here's a first version of running shortest-paths on the map. Streets are not yet weighted differently (and the coord system is still in degrees).
I also plotted the streets in the San Francisco Bay Area using these colors for the first letter of the street (except freeways):
1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Here is a similar google maps view. Mine looks stretched in width because Google's map uses some "reasonable" projection, whereas mine uses a "very simple" one.
Code is in CVS at the tag 'color_first_letter'. viewcvs is here.