The German government is spending EUR4m on integrating the GPS satellite navigation system with a magnetic speedometer. The speedometer, called the Lindometer after its inventor at Bombardier, being tested as part of the 250 km/h "Green Train" project in Sweden. The Lindometer measures speed and distance by magnetically detecting track clamps on rails as they go by. This is more accurate than the current method of detecting balises and measuring wheel rotation. The German government hopes the technologies can be integrated to form a simpler and cheaper alternative to ERTMS, the European Railway Traffic System which is to be installed on European high-speed railways by 2020.