Results of experiments carried out on the prevention system for traffic accidents with wildlife
A system to prevent traffic accidents with wildlife is being tested on the provincial road sp 40, in the Province of Grosseto (fig. 1) and on the state road SS74 Maremmana, in the Province of Terni (fig. 2). Testing is being carried out in order to investigate the most efficient ways to set up the system and to experiment different types of sensors that registerthe presence of animals along the road.
Figure 1. Provincial road Sp 40, in the Province of Grosseto
Figure 2. State road SS74 Maremmana, in the Province of Terni
In particular, we have tested doppler radar sensors (fig. 3) with high sensibility, various types of infrared sensors (fig. 4 and fig. 5) and a video camera that films the surrounding environment (fig. 6). Each sensor has different characteristics and the final choice of which one to use depends on the environmental circumstances of the site.
Figure 3. Doppler radar sensor mounted under the electronic control unit, which commands the entire system
Figure 4. Infrared sensor with a radius of action of about 100 meters, its battery is fuelled by solar power.
Figure 5. One infrared and one volumetric sensor, their battery is fuelled by solar power.
Figure 6. Infrared camera installed on top of the electronic control unit of the prevention system
The testing phase has therefore allowed us to identify the most effective solutions, with regards to the sensors as well as all the other components of the system.
Furthermore, road signs for motorists (fig. 7) have been mounted about 150 meters from the electronic control unit. The signs are provided with flashing lights that become activated when sensors placed on either side of the road register the presence of approaching animals. To decide on the final positioning of the signs we considered the route of the road and the potential velocity of approaching cars, and carried out various trials to establish the optimal distance that would allow the driver to slow down in time. The system was adjusted so that an acoustic deterrent is activated if the driver does not slow down to 50km/h.
Figure 7. Road signs for motorists provided with flashing lights
In the proximity if the prevention system we have installed camera traps (fig. 8) to monitor the presence of wildlife.
Figure 8. Camera trap installed in proximity of the road where there is an active prevention system
To signal the presence of the preventive system, we have posted signs on the pole of the system’s electronic control unit (fig. 9) and are currently taking steps to place other signs throughout the road where the system is operating.
Figure 9. Signs informing drivers of the presence of the prevention system.
We are currently carrying out final tests to screen against potential problems regarding the energy supply of the system so that, over the next few months, the system can be installed in the remaining provinces that are participating the project.