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Optimization Models for Snowplow Routes and Depot Locations: A Real-World Implementation.

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Area of Science:

  • Operations Research
  • Transportation Engineering
  • Public Administration

Background:

  • Winter road maintenance (WRM) is crucial for public safety and transportation network functionality.
  • Current WRM operations in Perth County face challenges in efficiency and resource allocation.
  • Reassessing service levels requires integrated planning across municipal boundaries.

Purpose of the Study:

  • To develop and implement strategies for optimizing WRM operations in Perth County.
  • To enhance the service level of winter road maintenance through route and depot optimization.
  • To identify potential cost savings and improved resource utilization in WRM.

Main Methods:

  • Development of a methodological framework for WRM optimization.
  • Creation of a Geographic Information System (GIS) database for benchmarking.
  • Optimization of plow routes and depot locations using a tabu search algorithm.

Main Results:

  • Identified opportunities for integrating WRM operations across municipalities.
  • Demonstrated the feasibility of retiring three depots and eight trucks through shared resources.
  • Achieved an optimized, integrated, and unified network for maintenance routes.

Conclusions:

  • Integrated WRM planning offers substantial monetary savings and improved efficiency.
  • Optimizing depot locations and plow routes enhances land use for maintenance yards.
  • The proposed framework provides a scalable model for improving WRM services.