CPV code 50113000 designates Repair and maintenance services of buses in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
50113000 sits under 50110000 (Repair and maintenance services of motor vehicles and associated equipment) and groups 2 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.