According to The New York Times , San Francisco will test 6,000 of its 24,000 metered parking spaces using a wireless sensor network that will announce which of the spaces are free at any moment. The wireless sensor is a device that can be glued on the pavement to monitor the presence of vehicle on the parking lot.
According to the report drivers will be alerted to empty parking places either by displays on street signs, or by looking at maps on screens of their smartphones. They may even be able to pay for parking by cellphone, and add to the parking meter from their phones without returning to the car. Thus with the technology, it will be a hassle free to renew your parking charges especially if you are still waiting in a queue.
Hopefully the technology which was introduced by streetline will help in reducing traffic congestion due to slow moving vehicles looking for empty parking spaces.