An integrated multi-criteria decision analysis and optimization modeling approach to spatially operational road repair decisions
Journal
Canadian Journal of Forest Research
ISSN
0045-5067
1208-6037
Date Issued
2021
Author(s)
Sättar Ezzati
Pete Bettinger
Ljusk Ola Eriksson
Anjali Awasthi
Type
Resource Types::text::journal::journal article
Abstract
In this study, we developed a generic cost-effective approach for spatially explicit decision support involving the allocation of road repair treatments. The approach begins with an assessment of the existing road condition to identify the extent of environmental impacts and to determine road repair regimes in a subjective manner using group-decision making efforts. An integer programming model is then formulated by combining expert opinions with operational costs to guide repair schedules required for each road segment at the operational planning level. To demonstrate model performance, we applied it to a 400 km<jats:sup>2</jats:sup> landscape consisting of 289 km of paved roads in the mountainous region of the Hyrcanian forests in Iran. We assessed sensitivity of the inputs, such as weight verification, budgetary limitations, and rehabilitation weights. The results of the subjective analysis show that 76% of the roads analyzed in these forests must be prioritized to receive treatments as intended for logistical purposes. Incorporating the extent of environmental dimensions into operational costs allows us to generate an optimal tradeoff curve by selecting an appropriate treatment for segments of a road network. The approach demonstrated here can be used to design detailed alternative solutions for addressing spatially-informed road decisions under various terrain conditions.
Subjects
road management
;
spatial decisions
;
environmental impacts
;
tradeoff curve
;
optimization
;
analysis
;
cost control
;
cost effectiveness
;
costs
;
decision making
;
forestry
;
maintenance
;
roads
;
budget control
;
cost effectiveness
;
decision making
;
decision support systems
;
environmental impact
;
forestry
;
integer programming
;
turnaround time
;
alternative solutions
;
cost-effective approach
;
group decision making
;
integer programming models
;
multi-criteria decision analysis
;
operational planning
;
optimization modeling
;
subjective analysis
;
decision making
;
integrated approach
;
landscape
;
mountain region
;
multicriteria analysis
;
optimization
;
repair
;
trade-off
;
roads and streets