STREAM enables passengers who are in a hurry to reach their destination faster. A few seconds before their bus approaches a red traffic light, it reports its position to a computer via a GPS receiver and a mobile phone network. A short time later, the traffic light signals to the vehicle that it has “clear sailing”. The technology also helps ambulances and fire trucks to arrive at their destination as quickly as possible accident-free. Another advantage: unlike conventional radio-based systems, the cost of STREAM – which was developed by Siemens and partners – for a municipality is reasonable.