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Analysis of declarations in distance based road toll schemes
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
2010 (English)Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The main focus of the master thesis lies on developing a methodology to analyse the accuracy of toll declarations within a satellite based toll system. This methodology employs two different approaches to determine reasons why Toll Service Providers (TSP) deliver toll declarations that show charge inaccuracies. Both approaches are carried out to analyse the results of the ARENA project’s field test which was held in April 2010 to test On Board Unit (OBU) solutions for toll collection. In particular, the charge reports of companies that participated in the field test are analysed.

An overview of satellite based tolling systems with regards to the design of the associated pricing lists and toll declaration requirements has shown that many differences among the tolling systems in Europe exist. In addition a practical analysis of the available test data is performed. The first approach is to use the delivered raw data from the compliance check reports to create a new set of charge reports. This set of newly created charge reports is then compared to the TSPs’ delivered charge reports and the known true charge report. Significant correlations between the TSP’s charge reports and the newly created ones are identified which lead to the conclusion that the raw data has been facilitated by the TSP to calculate the fees within the charge reports.

The results of the comparison when applying the first approach to the ARENA test data prove that the reason for the inaccuracies does not lie in the wrong calculation of the fees according to the ARENA pricing list but lies within the raw GPS data itself. The second facilitated approach is to visualise the GPS data in ArcGIS in order to analyse the reported trajectories. Therefore the true route, the reported trajectory and data from a reference OBU is used as an input. The results of applying the second approach to the ARENA test results show that inaccuracies were caused by failing to collect GPS data during power outages. Furthermore it is determined that there were data management problems on the TSP side regarding the time stamps of the reported test data.

Place, publisher, year, edition, pages
2010. , 86 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-93626ISRN: LiU-ITN-TEK-A--10/056--SEOAI: diva2:625635
Subject / course
Transportation Systems Engineering
Available from: 2013-06-05 Created: 2013-06-04 Last updated: 2013-06-05Bibliographically approved

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Menzel, Gerhard
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