Adaptive network control in Belgrade
The advantages of the system also include the possibility of expansion with additional modules (e.g. priority for buses, cyclists or emergency vehicles), the possibility of integrating independent subsystems, but also complete road networks (city and state roads such as highways and ring roads).
And no, that's not all! A big part of the Belgrade project is the introduction of tram priority at intersections.
The tram prioritization is done with Sitraffic Stream. It has the unique capability to transmit public transport telegrams to a controller via the control center without additional installations in the field.
Onboard devices are installed in 160 trams that provide the location of the trams via satellite-based positioning. As soon as a centrally configured trigger point is reached, a trigger point telegram is transmitted to the central Stream server. The traffic control center reports the approach of the tram to the intersection controller and its local traffic control system gives the command to switch the signal to green for a certain duration or to extend the existing green phase accordingly. Immediately after the tram has passed the intersection, the control system is switched back to normal operation.
The introduction of tram prioritization is intended to increase the attractiveness of public transport so that tram users reach their destination faster and spend less time in traffic.