Forest road construction is the most costly operation in forestry. Road designing and construction in unsuitable areas may increase construction and maintenance costs and also cause many environmental impacts. Therefore, it is required to pay more attention to forest road design. In this research, we tried to introduce an appropriate method for locating forest roads using GIS and AHP simultaneo...

Road maintenance is one of the main problems Departments of Transportation face during winter time. Anti-icing, i.e. applying chemicals to the road to prevent ice formation, is often used to keep the roads free of ice. Given the preventive nature of anti-icing, accurate predictions of road ice are needed. Currently, anti-icing decisions are usually based on deterministic weather forecasts. Howe...

Road maintenance is a complex issue with many uncertainties involved. Frequently, the analysis of good maintenance strategies is carried out in deterministic frameworks assuming that a deterministic model captures the ‘most probable’ scenario and therefore corresponds to the expected values in stochastic models. Since it is agreed upon that expected net-benefits are to be maximized, the introdu...

In this paper we discuss a dynamic efficiency measurement model for evaluating the performance of highway maintenance policies where the inter-temporal dependencies between consumption of inputs (i.e., maintenance budget) and realization of outputs (i.e., improvement in road condition) are explicitly captured. We build on a micro representation of pavement deterioration and renewal processes an...

Knowledge of the road status and specifically knowledge of the freezing point of the road surface fluid is crucial in order to perform effective and environmentally safe road maintenance. Road status sensors installed in the road can be passive conductivity sensors or active freezing point sensors. In this paper the output from a passive and an active sensor has been studied when the sensors ha...

Winter road maintenance planning involves a variety of decision-making problems related to the routing of vehicles for spreading chemicals and abrasives, for plowing roadways and sidewalks, for loading snow into trucks, and for transporting snow to disposal sites. These problems are very difficult and site specific because of the diversity of operating conditions influencing the conduct of wint...

Road degradation is a major issue in Nepal due to main focus only on backlog maintenance and upgradation which evidently an unsuccessful investment strategy worldwide. Considering global success of PBMC time-cost-quality spectrum, it has been implemented since 2003 but without success. Thus, ADB 2016 revised PBM specifications re-executed it, whose performance potential must be accessed with re...