Provide in vehicle speed advice based on the signal phase and timing of the approaching traffic light

When vehicles are on the road, their positional data (CAM messages) collected by the service providers of the OBU/ APP is forwarded to traffic light controllers on route via TLEX. In return, the traffic light controllers send back signal phase and timing information of the approaching intersections to the service providers via TLEX. Service providers can then use this information to generate vehicle speed advice. This is an open ecosystem solution using cellular communication.

The proven benefits of this use case include a substantial reduction in waiting time, fuel consumption and emissions. The smoother traffic flow improves the efficiency and safe passage of vehicles crossing intersections, reducing the number of stops at intersections and enabling a faster start at green lights. Monotch’s open-ecosystem solution is also a cost-efficient alternative to expensive VMS signs, e.g. ‘Green wave’, to deliver comparable benefits.