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Map matching for intelligent speed adaptation

Map matching for intelligent speed adaptation,10.1049/iet-its:20070036,Iet Intelligent Transport Systems,Nerius Tradisauskas,Jens Juhl,Harry Lahrmann,

Map matching for intelligent speed adaptation   (Citations: 4)
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The availability of Global Navigation Satellite Sys- tems enables sophisticated vehicle guidance and advisory systems such as Intelligent Speed Adap- tation (ISA) systems. In ISA systems, it is essen- tial to be able to position vehicles within a road network. Because digital road networks as well as GPS positioning are often inaccurate, a tech- nique known as map matching is needed that aims to use this inaccurate data for determining a vehi- cle's real road-network position. Then, knowing this position, an ISA system can compare the vehi- cle's speed with the speed limit in effect and react appropriately. This paper presents an on-line map matching al- gorithm with an extensive number of weighting pa- rameters that allow better determination of a vehi- cle's road network position. The algorithm uses certainty value to express its belief in the correct- ness of its results. The algorithm was designed and implemented for use in the large scale ISA project "Spar pa farten." Using test data and data collected from project participants, the algorithm's perfor- mance is evaluated. It is shown that algorithm per- forms correctly 95% of the time and is capable of handling GPS/DR errors in a conservative manner.
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