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“Radar is not affected by rain,fog,dust,smoke or even bright sunlight,which can be a problem for video-based detection systems at tunnel portals”
Although video-based incident detection is a big trend in the ITS industry,it is not the only solution capable of achieving good results in this field, and the adoption of radar-based systems is testament of this.
Often proven in equally challenging surveillance applications in the industrial and security sectors,radar is fast becoming an indispensable component of ITS.
Navtech Rader is a UK organization capitalizing on this movement.
Dr Stephen Clark, the company's co-founder and director of incident detection systems,explains how the company became involved in the traffic market:"Our background is in industrial automation,but a while ago we moved into the security market with a wide-area surveillance system.This received a lot of interest from customers wanting to detect traffic flow,stopped vehicles, pedestrians, debris on the road, and so on.The first traffic project we did was a trial on the M4 motorway for the Highways Agency(HA).We subsequently worked on a number of motorways conducting trials that were a mixture of incident detection across the whole carriageway and hard shoulder monitoring for managed motorways”
At the end of 2008,the HA requested that Navtech demonstrate the abilities of its solution in a tunnel environment.A trial in Southwick Tunnel using two radars has now led the HA to order six ClearWay radar systems in each tunnel bore for the new Hindhead thnnel on the A3 in Surrey.