Powered by Graphserver

Graphserver is an open source transit trip planner that anyone can contribute to and use.

To get involved, check out Graphserver or join the community of transit developers.

Graphserver Transit Images

What is a Transit Time Map?

A transit time map shows how far you can travel on public transit from a given location in a certain amount of time.  

This map is a baby step towards helping you find a walkable, transit-friendly place to live so that you can ditch the zero (your car) and get with the hero (your new walkable condo near a light rail stop).

Did you know the average American spends over $8,000 per year on their car¹? Did you know this is the equivalent of having a $135,000 mortgage?

Thanks to Brandon Martin-Anderson for making transit time maps happen!

How it Works

Transit schedules are downloaded in GTFS format and the XML street data is fetched from OpenStreetMap. These are compiled into a graph for use by the Graphserver trip planner. Street intersections are graph vertices and streets are graph edges.

Graphserver calculates the shortest path tree for a given location. The time of arrival at all street intersections is cross-referenced with a table of street intersection locations to create the contours for different travel times.

Note: This is a technology preview which means it is slow and easy to break.