The document describes two existing active smart parking systems in London and Moscow.
The London system called SmartParking uses infrared sensors equipped with RFID technology to detect vehicles in parking spots. Over 3000 sensors were initially installed in 2014 with plans to install 7000 more. The total estimated costs were around 1.1 million euros.
The Moscow system called Fastprk is considered the largest in the world, using sonar sensors and magnetic detection technology. It was first tested in 2011/12 and has been operational since 2012, with installation in four stages reaching over 50,000 sensors by mid-2014. The wireless system transmits availability information to drivers' cellphones and display panels.