Geschwindigkeitsüberwachung im Straßentunnel
Speed enforcement in motorway tunnels
Design of speed enforcement systems in motorway tunnels.
Accidents occuring inside a tunnel may result in damages more severe than those outside.
To guarantee smooth traffic flow, modern motorway tunnels are already equipped with various safety systems.
However, road users exceeding the speed limits can still pose a major risk to a tunnel's safety.
When speed limits are broken in a motorway tunnel frequently, a speed enforcement system can be implemented to assure the limits and to prevent the growth of an accident blackspot.
The tunnel's speed sensors are located in multiple spots along all lanes and both directions of traffic. The Traffic Management System (TMS) can adjust the speed limit in relation to the current traffic situation. Therefore, a connection between the tunnel's TMS and its speed enforcement system is required.
The speed enforcement system consists of:
- Speed sensors located in the lane
- Digital cameras
- Black flash devices
- Evaluation system
- Connection with Variable Message Signs (VMS) / roadside substations
- Data transfer to the control center
- Central data capture and storage
VIA Beratende Ingenieure services included:
- Preliminary design
- Design
- Detailed design
- Preparation of tender documents
- Supervision and participation in trial operation
Period of executioon: 2008 - 2010
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