DField SolutionsMérnöki stúdió · Budapest
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CASE STUDIES · saas

AI routing platform for logistics · 17% fewer km, 22% higher on-time rate

Built an AI-assisted routing platform for a mid-size EU logistics operator · OR-Tools + GraphHopper + LLM-based dispatcher explainer. 17% fewer route km, 22% higher on-time delivery rate.

Timeline12 weeks
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Reviewed by
0117% fewer total route km per month.
0222% higher on-time delivery rate.
03 / Driver acceptance of computed routes42% → 87%.
04 / Management satisfaction with explainability4.6/5.
The problem01 / 03
  • 01Dispatchers routed manually on a legacy tool · optimisation left on the table.
  • 02Driver acceptance of computed routes was historically poor (trust issue).
  • 03Last-mile constraints (time windows, vehicle types, driver rest) were informal.
  • 04Management couldn't see why a route was chosen · no explainability.
The solution02 / 03
  • 01OR-Tools + GraphHopper for the optimiser · PostGIS-indexed geometries.
  • 02Constraint DSL where dispatchers write time windows + vehicle rules in plain text.
  • 03LLM explainer generates a 2-sentence justification per route, reviewed by dispatcher.
  • 04A/B shadow-mode against manual dispatch for 4 weeks before full rollout.
The outcome03 / 03
  • 0117% fewer total route km per month.
  • 0222% higher on-time delivery rate.
  • 03Driver acceptance of computed routes: 42% → 87%.
  • 04Management satisfaction with explainability: 4.6/5.
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