71311230 - Railway engineering services

CPV code 71311230 in the EU Common Procurement Vocabulary refers to Railway engineering services. It sits at level 6 of the CPV hierarchy as a subcategory within the 71 division. This code is nested directly under 71311200, narrowing the broader category into the specific area of railway engineering services. As a leaf code, 71311230 has no further subdivisions and represents the most precise classification available in this branch — buyers should reference it directly in tender notices when the procurement primarily concerns railway engineering services. Contracting authorities across the EU use 71311230 in TED notices and national procurement portals to signal that a tender relates to railway engineering services.