This paper describes two unique designs of Tollstar's Toll Collection System involving the use of advanced image processing systems to both detect and classify vehicles by size. One uses 2 curtains of RF beams, the other a broad RF beam structure. The use of phase correlation techniques enables the location of the responding on-board equipment to be established and the correlation between the outputs of these two subsystems enables correctly paying vehicles to pass through a toll area having paid the toll. The system triggers enforcement action on vehicles which do not pay either the correct or any toll. (4 pages)
Unique aspects of the Tollstar solution for electronic road pricing
1995-01-01
1 pages
Article (Journal)
English
phase correlation techniques , EFTS , microwave links , electronic road pricing , RF beams , Tollstar , radio applications , Toll Collection System , vehicle detection , correlation methods , road traffic , 5.8 GHz , advanced image processing systems , image recognition , tariffs , vehicle classification , on-board equipment
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