Road infrastructure as a central part of sustainable mobility
Global population and transport growth has resulted in higher traffic density on road networks. When building new roads and upgrading existing road infrastructure, public authorities and private-sector partners seek solutions to environmental issues, especially those caused by traffic growth.
Focusing on road infrastructure as a central part of sustainable mobility answers the double objective of local authorities:
- reduce the environmental impact of traffic growth
- improve transport quality and safety
VINCI Energies supports their efforts to install smart road infrastructure as part of their drive to achieve sustainable mobility: city street networks, expressways, motorways, tunnels and bridges, inter-urban links, etc…
VINCI Energies has designed and built the system of urban traffic management in the city of Rouen (France)
Identifying traffic to better manage it
"Upstream" studies assess traffic density and draw up traffic growth scenarios based on projections. These focus on traffic analysis and support road network management.
The LEE Conseil* business unit handled the traffic studies and documentation - including the Traffic Management Plan - required by the future road operator of the East West Link in the Greater Avignon area in southern France.
Traffic management software
Ensuring user safety by building smart and responsive infrastructure
- Incident detection by means of dynamic equipment and safety systems on the roadway
SDEL Transport Grands Projets* provided the design studies, installation and commissioning of an Automatic Incident Detection (AID) system in 22 tunnels along Greater Paris area expressways. More than 46 km of expressways were equipped with a network of 1,450 video surveillance cameras.
- Automatic control of safety and fire plan equipment by means of IT and technical supervision systems
Actemium* designed, implemented and commissioned the IT system of the emergency closure devices in the conventional and cut-and-cover tunnels along the A14 motorway. The project included monitoring and control of safety equipment, scenarios and fire plans and integration in existing architecture.
- Danger alarms via transmission networks
Graniou* set up the radio safety (SAMU, SDIS) and operating (TETRA: Terrestrial Trunked Radio standard) systems in the A86 Duplex to ensure that all tunnels and technical premises are covered.
A 86: information signs alert motorists
of any problems
VINCI Energies installed the electrical (high and low current) equipment and the safety and supervision systems in the tunnel, which has a total length of 11 km and was built over a period of nearly 20 years.
This equipment, which covers tunnel operation and user safety, is managed by a supervision system connected to 120,000 monitoring points. The tunnel was named Europe's safest in the 2010 EuroTAP test programme carried out with the support of the European Commission (which assessed 26 tunnels in 13 countries). The testing team specifically mentioned the high quality of the alarm and emergency response system in the event of an incident: automatic detection, motorist information and guidance, efficient fire fighting and rescue service equipment.
Making driving easier by means of high-quality infrastructure
GTIE Transport* won the contract to implement the turnkey operating system and tunnel equipment on the eastern portion of the A89 motorway between Balbigny and La Tour de Savalgny in France's Loire and Rhône departments.
The Lesens Erea* business unit installed the electrical cabinets and variable message boards along the Cofiroute motorway network and is responsible for their maintenance. Data collected are disseminated via the optical fibre network or by microwave. The system reinforces the information broadcast on the Autoroute FM radio station.
The SDEL Transport Services* business unit is currently providing multi-technical maintenance for the equipment in several Greater Paris area car parks, including the electrical, video surveillance, intercom, automatic door and access control systems.
Sustainably improving cities with major urban projects
Under a PPP (Public Private Partnership) contract signed with the City of Rouen in 2007, VINCI Energies undertook to design and implement a comprehensive urban traffic management system including:
- renovation and upgrade to standards of the city's traffic light intersections with related traffic regulation and video surveillance systems
- construction of a traffic regulation control centre and installation of traffic management software tool and a range of urban equipment.
Setting up a CCTV camera at
a crossroads in Rouen
Following these works, road traffic supervision is now carried out centrally and in real time.
The results clearly benefit all users:
- User travel time has been reduced by 23% to 28% on the major thoroughfares despite an increase in road traffic of some 14%;
- A recurring traffic jam, which forced the closure of a tunnel, has been virtually eliminated;
- Buses are more punctual, with maximum delays of 5 minutes compared to 25 minutes previously.
This large-scale project also includes maintenance and power supply for a period of 20 years.
THE ROUEN PPP AT A GLANCE |
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* VINCI Energies is made up of 900 close-knit business units operating as a network and GTIE Transport, LEE Conseil, SDEL Transport Grands Projets, Lesens Erea, SDEL Transport Services are part of them. Actemium and Graniou are global brands of the Group.
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