What is another word for mainlines?
Pronunciation: [mˈe͡ɪnla͡ɪnz] (IPA) 
Mainlines are the essential arteries of any transportation system. Synonyms for mainlines include primary roads, highways, and expressways. Other synonyms for mainlines include major routes, main arteries, and thoroughfares. Mainlines are the most significant routes that connect various destinations and are often prioritized for maintenance and development. In the railroad industry, mainlines are the tracks that carry the most significant amount of freight or passengers, linking major cities or regions. In telecommunication, mainlines refer to the primary transmission lines that transfer data or voice signals across long distances. Regardless of the context, the term mainline is vital in describing the backbone of any system that connects multiple endpoints.
