The Project consists of implementing a shadow-toll system for the Santiago–Brión (AG-56) dual-carriageway system. The road is 15.9 km long, 12.6 km of which corresponds to the main trunk of the four-lane dual-carriageway (2+2).

Since this dual carriageway is operated under a shadow-toll arrangement, drivers are charged no direct costs for using it.

The shadow-toll system is supplemented with auxiliary systems for road users, including variable-message panels, CCTV surveillance and SOS telephone posts.

This project is the culmination of the efforts made by SICE in the evolutionary development of its roadside traffic-data-collection equipment and software for the centralised management of the system — both products have been designed, manufactured and developed completely by SICE:

• Field equipment for counting and classifying vehicles using roadside turns and piezoelectric sensors
• Centralised supervision, control and auditing system for field information.
• The works also include 3 tunnels with their respective subsystems (SOS posts, ventilation, etc).

Field equipment:

• 8 data-collection stations
• 15 Domo TV cameras
• 7 fixed colour cameras for video verification
• 9 pairs of GSM SOS posts
• 6 variable-message panels
• 2 weather stations (with ice sensor)
• 16 Ethernet Gigabit field switches
• 17,468 m of monomode 12-optic-fibre cable.

Control-centre equipment:

• Database server
• 3 workstations for managing the toll-shadow system and ITS
• 1 SOS operations post
• 1 communications switch
• 1 SAI
• 1 laser printer
• 1 firewall