Adaptive traffic light control

Traffic lights are one of the most used methods to control traffic. However, traffic management is more efficient when data on actual traffic conditions are available to manage traffic signs in real time. This is called adaptive traffic light control.

A smart solution is to use in-ground sensors for wireless vehicle detection instead of inductive loops. In this way, installation and maintenance operations are very quick. Also, the detection accuracy is higher compared to inductive loops because Sky Light Traffic Sensor uses a combination of optical and magnetic technology to detect vehicles. This is the best solution in stop-and-go traffic where vehicles are very close to one another.

Adaptive traffic light control is an effective tool to lower the level of pollution in the cities because it helps reduce the waiting time at intersections and traffic congestion.

Adaptive traffic light control system with wireless sensors for vehicle detection

Sky Light Intersection System can be used to control a single traffic signal as well as to coordinate multiple traffic lights. The sensors monitor the traffic flow and send information to the traffic light controller via radio through an interface card placed into the traffic controller cabinet. The controller of the traffic light manages the time intervals of green and red signals according to the actual traffic situation.



Elimination of weak points of wiring like layout restrictions and cable break


Easy and fast operations during road maintenance activities


Higher accuracy compared to inductive loops and cameras


Classification is useful to build Public Transport Priority Systems


Wireless system for traffic light control


Smart City Trento
Smart City Trento

Trento has been one of the first cities to test Sky Light technology …

Smart Cities Test Plant Bologna
Smart Cities Test Plant

In Bologna one of the biggest test plant has been installed …

Smart City tests at National Research Council in Bologna
Smart City tests at CNR BO

The Smart Services Cooperation Lab in Bologna …

Traffic light control in Rome Flaminio
Traffic lights in Rome

The system has been installed by Citelum, one of the most …

Traffic light control for trams in Padova
Tram at a junction in Padova

A test to detect trains approaching a traffic light

Traffic light control for trams in Rome Aldrovandi
Tram detection in Rome

In November 2014 Nabla Quadro and Roma Servizi per la Mobilità started…

Traffic light control for trains in Rome Casilina
Train priority in Rome

This installation has been completed in June 2015 with Roma Servizi per la Mobilità srl…

Traffic light control in Rome Nomentana
Smart traffic lights in Rome

Sky Light Intersection System has been installed in via Nomentana

Traffic light control in Genova
Sensors vs loops in Genova

A comparison between two technologies for traffic light control

Truck monitoring in Este
Truck monitoring in Este

Urban access regulation needs traffic data to …

Traffic monitoring in L’Aquila
Traffic monitoring in L'Aquila

A big project on traffic monitoring on the …

Traffic monitoring at Tosano shopping mall
Traffic at the shopping mall

Traffic data are useful to understand how many visitors…

Traffic monitoring in Castel Romano
Traffic in Castel Romano

Our first test plant for traffic monitoring

Traffic monitoring in San Benedetto del Tronto
Traffic in San Benedetto

Traffic monitoring with LoRaWAN sensors