By providing real-time data about what actually happens in on-street spaces, the sensors can help enforce parking laws, move toward smart and flexible curbside pricing, and prevent cruising and traffic congestion.
A press release from the manufacturer (reported on by local blog Roosevelt Island 360) explains how it works:
The new "smart" parking spaces will be outfitted with Streetline's patented parking system which includes ultra-low power sensors that communicate with one another to deliver valuable real-time information, such as how long a car is parked and when a car enters and leaves a parking space. The initial system also lays the foundation for smart parking meters allowing for easier payments and better pricing."
Right now, only 29 spaces have the sensors as the city performs a test run. Once the program spreads, the city is developing an iPhone App that will direct users to empty parking spaces.
Thanks to Noah Kazis
FULL STORY: Roosevelt Island Parking Sensors Will Point the Way to Smart Parking

Alabama: Trump Terminates Settlements for Black Communities Harmed By Raw Sewage
Trump deemed the landmark civil rights agreement “illegal DEI and environmental justice policy.”

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

The 120 Year Old Tiny Home Villages That Sheltered San Francisco’s Earthquake Refugees
More than a century ago, San Francisco mobilized to house thousands of residents displaced by the 1906 earthquake. Could their strategy offer a model for the present?

Ken Jennings Launches Transit Web Series
The Jeopardy champ wants you to ride public transit.

BLM To Rescind Public Lands Rule
The change will downgrade conservation, once again putting federal land at risk for mining and other extractive uses.

Indy Neighborhood Group Builds Temporary Multi-Use Path
Community members, aided in part by funding from the city, repurposed a vehicle lane to create a protected bike and pedestrian path for the summer season.
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.
Clanton & Associates, Inc.
Jessamine County Fiscal Court
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Toledo-Lucas County Plan Commissions
Salt Lake City
NYU Wagner Graduate School of Public Service