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Fleet shortages at either echelon can create bottlenecks and reduce network efficiency. This study introduces the Two-Echelon Vehicle Routing Problem with Collaborative Vehicle Utilization (2EVRP-CVU), a framework enabling carriers to share vehicles across both echelons. Each carrier serves only its own customers, preserving customer privacy and service quality. We develop two mixed-integer programming formulations: an arc-based formulation solved with a commercial MIP solver (Gurobi), and a route-based formulation solved using an exact branch-cut-and-price algorithm, supported by heuristics for larger instances. <br> \nThis archive contains two types of instances: C-instances (clustered customer locations, 9 files) and R-instances (randomly distributed customer locations, 12 files), both generated by extending the Solomon benchmark instances to a two-echelon collaborative vehicle routing setting. Detailed descriptions and file formats can be found in the accompanying README file."}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Business and Management"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"two-echelon vehicle routing problem with collaborative vehicle utilization (2EVRP-CVU)"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"modified Solomon benchmark instances"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"two-echelon vehicle routing"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"collaborative vehicle utilization"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"carrier collaboration"}}]},{"typeName":"distributor","multiple":true,"typeClass":"compound","value":[{"distributorName":{"typeName":"distributorName","multiple":false,"typeClass":"primitive","value":"DataverseNL network"},"distributorAffiliation":{"typeName":"distributorAffiliation","multiple":false,"typeClass":"primitive","value":"DANS"},"distributorAbbreviation":{"typeName":"distributorAbbreviation","multiple":false,"typeClass":"primitive","value":"DVNL"},"distributorURL":{"typeName":"distributorURL","multiple":false,"typeClass":"primitive","value":"https://dataverse.nl/"}}]},{"typeName":"depositor","multiple":false,"typeClass":"primitive","value":"Silva Correia Alves, Ana"},{"typeName":"dateOfDeposit","multiple":false,"typeClass":"primitive","value":"2026-07-30"}]},"dansDataVaultMetadata":{"displayName":"Data Vault Metadata","name":"dansDataVaultMetadata","fields":[{"typeName":"dansDataversePid","multiple":false,"typeClass":"primitive","value":"doi:10.34894/8KQNOS"},{"typeName":"dansDataversePidVersion","multiple":false,"typeClass":"primitive","value":"1.0"},{"typeName":"dansBagId","multiple":false,"typeClass":"primitive","value":"urn:uuid:49f3a355-a5bc-46f0-8628-0db0b1f8a209"},{"typeName":"dansNbn","multiple":false,"typeClass":"primitive","value":"urn:nbn:nl:ui:13-8866e2e6-3f5c-44bf-8670-8a1981109abb"}]}},"files":[{"label":"2EVRP-CVU_Data.zip","restricted":false,"version":1,"datasetVersionId":35141,"dataFile":{"id":657578,"persistentId":"","filename":"2EVRP-CVU_Data.zip","contentType":"application/zip","friendlyType":"ZIP Archive","filesize":281467,"storageIdentifier":"surf://store:19fb26a6325-0231294efba7","rootDataFileId":-1,"checksum":{"type":"SHA-1","value":"d17c9e431ae1aa7cfc9f7c8a3632bd0e60f01681"},"tabularData":false,"creationDate":"2026-07-30","publicationDate":"2026-08-12","lastUpdateTime":"2026-08-12T12:48:56Z","fileAccessRequest":true}}]}}}