A fast heuristic for large-scale capacitated arc routing problems

Sanne Wøhlk, Gilbert Laporte

Research output: Contribution to journalArticlepeer-review

14 Citations (SciVal)
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The purpose of this paper is to develop a fast heuristic called FastCARP for the solution of large-scale capacitated arc routing problems, with or without duration constraints. This study is motivated by a waste collection problem in Denmark. After a preprocessing phase, FastCARP creates a giant tour, partitions the graph into districts, and construct routes within each district. It then iteratively merges and splits adjacent districts and reoptimises the routes. The heuristic was tested on 264 benchmark instances containing up to 11,640 nodes, 12,675 edges, 8581 required edges, and 323 vehicles. FastCARP was compared with an alternative heuristic called Base and with several Path-Scanning algorithms. On small graphs, it was better but slower than Base. On larger graphs, it was much faster and only slightly worse than Base in terms of solution quality. It also outperforms the Path-Scanning algorithms.

Original languageEnglish
Pages (from-to)1877-1887
Number of pages11
JournalJournal of the Operational Research Society
Issue number12
Early online date24 Jan 2018
Publication statusPublished - 2 Dec 2018


  • Arc routing
  • Denmark
  • districts
  • heuristics
  • waste collection

ASJC Scopus subject areas

  • Management Information Systems
  • Strategy and Management
  • Management Science and Operations Research
  • Marketing


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