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Sökning: WFRF:(Carlsson Jörgen) > VTI - Statens väg- och transportforskningsinstitut

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  • Larsson, Jörgen, et al. (författare)
  • Evaluation of speed reducing measures in Gothenburg
  • 2013
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • VTI has analysed the effects of implemented traffic safety measures, in particular with regards to the socio-economic effects of speed reduction measures taken within the urban area of Göteborg, 1990-2003. The calculations are based on the document “"Traffic accident development in Gothenburg, 1990 -2003”" (Lennart Adolfsson). Measures taken include speed bumps and similar speed reduction measures such as hour glass shaped indents on the road by public transport stops, and roundabouts. VTI was commissioned to review the document with focus on the reasonability of the expected reduction of fatalities and serious injuries, and the subsequent monetary evaluation of the above mentioned speed limiting measures. The socioeconomic saving for each SEK invested is estimated to equal approximately 40 SEK”. Estimates made by VTI show that the figure known as the cost effectiveness ratio, represent 3.7 MSEK per saved life in traffic safety cost, having taken into account discounted establishment costs and excluding increased travelling time and raised maintenance / running costs. It has been assumed that approximately 50 per cent of the reduced fatality and serious injury rate can be attributed to the implemented speed reduction measures. According to recommendations by ASEK 5 to calculate the establishment costs based on the 2010 price index, the equivalent figures are estimated at 5.2 MSEK per saved life based on attributing 50 per cent, respectively of the injury rate reduction to said measures. A financial ratio representing the socio-economic effect better is the Net Present Value Ratio (NPVR), as it takes taxes and charges into account. Estimates made by VTI also take running costs into account. However, due to the unavailability of primary data, cost estimates for increased travelling time were based on assumptions. Based on a depreciation period of 15 years for targeted traffic safety and environmental measures at a cost of capital rate of 3.5 per cent, NPVR = 21.7. This is a very high value.
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Carlsson, Arne (2)
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