The District Department of Transportation's (DDOT) Signal Phasing Data Service (SPDS) provides approved users with access to DDOT's traffic signal phasing data to utilize in applications that will improve transportation efficiency and enhance the lives of motorists, pedestrians, cyclists and transit users. OCP's website.

The District of Columbia Geographic Information System (DC GIS) provides District agencies and the public geospatial data and enterprise applications. GIS empowers policymakers and implementers with data and application tools to support better decision-making and performance.

The District of Columbia GIS community wants to ensure the District’s data is as open, discoverable and usable as possible in the hopes of fostering greater participation and collaboration. Search the site for datasets by topic, explore featured datasets or review the full list of DC Data sets.