Accident detection through digital video analysis as an option to increase tunnel safety

Georg Mayer

The safe operation of tunnels requires a fast and reliable incident detection. Only precise information about the place, type and extent of the incident allows for a selective launch of measures, e.g. regulation of the ventilation system for smoke control in case of fire, or the halting of traffic outside and inside the tunnel following an accident. This paper discusses the use of digital video analysis in incident detection. Using appropriate evaluation logarithms, available computing capacities allow for an analysis of video data in real time and, at the same time, to automatically detect the type and extent of the incidents as well as their spatial and temporal causes. In addition to traffic data such as traffic flow, traffic density and speed, video imaging can detect the following incidents: formation of fire and smoke, stopped vehicles, ghost drivers, changes in illumination, and use of hard shoulders by emergency response teams. Online analysis of the video data then makes the direct and selective control of operating functions possible immediately following the incident occurrence. A further advantage of digital video analysis lies in the storage of recorded data, which can serve in the subsequent reconstruction of incidents.



Cost Benefit Analysis (CBA) workshop in Stockholm

An open seminar and workshop in Stockholm will be held on 25-26 April 2018. The workshop deals with the use of CBA as a basis for decision-making in the public sector. The workshop is organized by, among others, Professor Jan-Eric Nilsson, VTI.



Ulf Sandberg has been presented with the TTI Lifetime Achievement Award 2018

VTI’s Senior Research Leader Ulf Sandberg has been presented with the TTI Lifetime Achievement Award 2018 for his work on research into tyres and road surface.


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Swedish German research collaboration on Electric Road Systems

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Electric Road Systems Conference 2018

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