Sky Light Traffic Sensor

Sky Light Traffic Sensor is a wireless sensor for vehicle counting and average speed evaluation of traffic flows.

Thanks to these in-ground sensors, traffic data are sent to the server at scheduled time intervals from 2 to 60 minutes. Data are sent to the server via LoRaWAN or NB-IoT. An online dashboard displays the overall counting, occupation time, and average speed detected by the sensors. In this way, it is possible to know and evaluate the real-time traffic conditions of monitored roads.

Sky Light Traffic Sensor uses three different technologies to detect vehicles:

  • ambient light variation sensor;
  • active infrared sensor;
  • magnetic field sensor.
sky light traffic sensor for wireless vehicle detection

Optical detection guarantees precise measurements even in slow and congested traffic. A unique algorithm combines all three measurements in real-time to give accurate information.

Sky Light Traffic Sensor has been designed with advanced features that make it unique and effective. Even though it is an in-ground sensor, it has an external box that is placed in the hole which has been drilled in the pavement. The core of the sensor is fixed inside the box with security screws. This special feature makes it exceptionally easy to replace a sensor in case of road maintenance works.

In addition, Sky Light Traffic Sensor can be refurbished at the end of its battery life, so to extend the product’s life cycle.


Providing traffic information to drivers, using variable message signs or mobile apps for smartphones

Sending alarms when the system detects any traffic jams

Keeping track of trends to manage and predict traffic flows

Using traffic data to plan road works or design new infrastructures

Monitoring the composition of the traffic flow (cars, buses and trucks, urban trains) in specific points of interest

Detecting the speed of vehicles in the traffic flow


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