Tillståndsuppföljning av observationssträckor: lägesrapport för LTPP-projektet till och med december 2016

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Nils-Gunnar Göransson

The objective of this project is to collect and deliver high quality road data primarily for use in the development of performance prediction models. Monitoring of the LTPP sections (100 m long) started in 1984 on commission of the Swedish Road Administration. The aim is primarily to focus on road deterioration caused by heavy traffic. The project started with a limited amount of sections but, in 2016, the number has increased to 690 sections distributed over 65 sites. All sections are included in Sweden’s national road network. During the year, some sections became redundant and a number of replacement sections were included. Budget restrictions in 2000 resulted in a review of the sections and a 25 percent reduction in monitoring was implemented. Despite this decrease, the project purpose could still be maintained. By retaining the most strategically important routes and reducing the number of surveys useful high quality data could still be obtained from the sections left in the monitoring program. In addition, the introduction of median barriers on some sections (to facilitate traffic separation) has meant a disqualification of suitability. During 2017, 313 sections distributed over 33 sites will remain active.

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