The means of transport selected was the trolley-bus — an articulated bus with electrical (main) and mechanical (auxiliary) traction — since the electrical power system used has a very low environmental impact.

The network consists of 45 stations (16 dual platform and 29 single platform) distributed over the trolley-bus routes. SICE is responsible for the following subsystems:

Centralisation of the city’s traffic lights

• Traffic-light system at 60 crossings on trolley-bus routes.

Control centre

• Installation of a VideoWall to control and view the various subsystems in the network.
• Communications network: SDH STM-1 network (155 Mbps), integrating the various different subsystems (PA system, Ethernet networks, SCADA, telephone switchboards).

Operations-support system: unifies data from all subsystems

• Intruder control at stations
• TAG-based control of trolley-buses’ locations.
• Traffic-light control on each platform.

POS terminal

• System responsible for management, control and ticketing to access the stations.

SCADA

• Monitors, supervises and acts on the various electricity substations responsible for powering the trolley-buses’ overhead contact line.

Telephone switchboards

• Each station is equipped with a telephone for the ticket-office worker to communicate with the control centre.

Closed-circuit television

• To control events at stations a fixed camera was installed at each.

Automatic gates

• 3 automatic gates per platform, making a total of 183 gates.

PA system

• All stations have a background-music system controlled from the control centre (CC).
• Over this system live and pre-recorded messages can be issued at the stations.

Access control

• Turnstiles were installed at the stations, two at each station (90 in all), to control access to the station by passengers.

Control of trolley-bus routes and journey times

• Via 42” plasma screens (61) at stations (2 at dual stations and 1 at side stations), passengers are informed about the ETA of the next trolley-bus and average journey times between stations.