45234124 - Underground passenger railway transport

CPV code 45234124 in the EU Common Procurement Vocabulary refers to Underground passenger railway transport. It sits at level 6 of the CPV hierarchy as a subcategory within the 45 division. This code is nested directly under 45234100, narrowing the broader category into the specific area of underground passenger railway transport. As a leaf code, 45234124 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 underground passenger railway transport. Contracting authorities across the EU use 45234124 in TED notices and national procurement portals to signal that a tender relates to underground passenger railway transport.