A partnership between the NYC Department of Information Technology and Telecommunications (DoITT) and OpenStreetMap is a promising example of the public sector and tech communities working together to improve the accuracy and usability of data sets.
"Yesterday New York City opened up 200 high value data sets to the public, making it possible to use this data to improve OpenStreetMap. In return, New York City's GIS team can now be informed of changes made in OpenStreetMap around their datasets - helping them to keep their map data current," writes Alex Barth, an open data expert with MapBox.
"This move effectively makes the largest municipality in the United States an OpenStreetMap participant," he adds. "This is an exciting example of connecting governments to open data communities, step by step moving towards a future where citizens and government collaborate directly around the same datasets."
FULL STORY: New York City and OpenStreetMap Collaborating Through Open Data

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Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
City of Albany
UCLA Lewis Center for Regional Policy Studies
Mpact (formerly Rail~Volution)
Chaddick Institute at DePaul University
City of Piedmont, CA
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research