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Optimization of snow removal in Vermont.
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2013-08-01
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[PDF-2.40 MB]
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Abstract:The purpose of this report is to document the research activi
ties performed under project SPR
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RAC
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727 for the
State of Vermont, Agency of Transportation, Materials & Research Section entitled “Optimization of Snow Removal
in Vermont”
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The overall objective for this project was to develop, for VTrans roadway snow an
d ice control
operations, storm
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specific routes designed to maximize the efficiency of the service provided in terms of labor
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hours and fuel
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This report describes the set of processes implemented for optimizing RSIC operations for the
roadways that VTran
s is responsible for
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Three different approaches to establishing priority for certain roadways
are implemented, including one that uses the Network Robustness Index developed previously by researchers at
the UVM TRC, and each is run for three storm levels
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low
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salt, medium
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salt, and high
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salt
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Storm
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intensity levels
are important because they dictate the amount of salt application required
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–
200 lbs/mile, 500 lbs/mile, and 800
lbs/mile, which is the primary constraint for the maximum length of a round
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trip route for roadway snow and ice
control.
The first task was to optimize the service areas for each of the 61 VTrans maintenance garages based on the
travel time between each garage and the surrounding road network
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The second task was to develop alte
rnative
vehicle allocation methods and assign each of the vehicles in the VTrans RSIC fleet to the maintenance garages
based on these methods
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The third task was to optimally route each of these vehicle allocations according to the
combined service time/f
uel consumption metric
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The fourth and final task was to evaluate the competing vehicle
allocations based on the speed with which high priority road corridors are serviced
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