Effektiva kontraktsmodeller för vägunderhåll

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The study in this report reviews international experiences of contracting of routine road maintenance. The study describes the contracting models used in Norway, Scotland and Ontario (Canada), as well as the results from the relevant research literature. Focus has been to map differences in efficiency between traditional and performance-based contracting, as well as the effects of incentives, risk sharing, competition and quality dimensions in contracting. The results show that Ontario and Norway have largely performance-based contracting models. Recently, some aspects of these contracts have been reconsidered because of problems mainly with respect to winter maintenance. In Ontario, quality is now considered as one component for identifying the winning bidder; Norway has a new reimbursement model that aim to balance the contractors’ incentives. Also, Norway is testing new contracting models in five areas. Scotland uses traditional contracts and is testing a new performance indicator to improve winter maintenance by using measurements of friction. In the literature, the view on performance-based contracting is often positive. But no study has been found that measures the efficiency of different contracting models that accounts for possible simultaneous changes in quality or long-term effects.

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