Where to find a road network for San Francisco?

June 22, 2009 8:27 PM

Looking for a publicly available graph (vertices and edges) representation of San Francisco's streets. Also called a road network I believe.

I'm imagining each vertex is an intersection with edges to intersections that are one block away. Not too concerned with format as long as it's parsable.

Other cities are interesting as well, but I really want SF. Thanks in advance!

posted by christy to computers & internet (6 comments total)

The datasets for the 9th DIMACS challenge include distance and travel time graphs for various parts of the US including the SF Bay area.
posted by jedicus at 8:41 PM on June 22

that's a great start, thanks! would be nice if it had any street name information though :)
posted by christy at 8:53 PM on June 22

ahh, but your link has lead me to the Tiger Line Files which seem to have exactly what I'm looking for.

Thanks much!
posted by christy at 9:16 PM on June 22

If you want to convert the shape file/tiger file into a node/link network you can use some of the scripts listed here in ArcGIS.

I was doing this for road networks at a national scale - you are welcome to contact me if you have specific questions.
posted by a womble is an active kind of sloth at 11:26 PM on June 22

Could data from the OpenStreetMap project be modified to suit your needs? Bonus: It's Creative Commons-licenced.
posted by Harald74 at 12:40 AM on June 23

Most of openstreetmap in the US comes from Tiger anyways. Tiger is the dataset the US Census publishes, built from Census workers (now with hand held tools to mark updates) who are already canvassing the US.
posted by pwnguin at 5:04 AM on June 23