Usage Note
Viario is a technical adjective meaning 'relating to roads or road networks' — red viaria is the 'road network', infraestructura viaria is 'road infrastructure'. It is almost exclusively used in official, urban-planning, or journalistic contexts and would sound unusual in everyday conversation.
Examples
"El plan mejora la red viaria de la ciudad."
Natural Translation
The plan improves the city's road network.
Related Words
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