San Francisco has put sensors into 7,000 metered parking spots and 12,250 spots in city garages. If spaces in an area open up, the sensors communicate wirelessly with computers that in turn make the information available to app users within a minute, said Mr. Ford, of the transportation agency. On the app, a map shows which blocks have lots of places (blue) and which are full (red).
San Francisco’s is by far the most widespread approach that several cities, universities and private parking garages are experimenting with.
Last December, Los Angeles worked with a company called Streetline to introduce a system covering spaces in West Hollywood, and it is expanding the program elsewhere. Streetline has since set up smaller projects on Roosevelt Island in New York City’s East River, as well as at the University of Maryland and in Forth Worth, Tex. (Emphasis added)
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