noun
lines in operation; routes in service
Refers to actual railroad or bus lines currently in operation, as opposed to planned or discontinued ones.
この鉄道会社の営業路線は総延長500キロを超える。
This railway company's lines in operation exceed a total length of 500 km.
バスの営業
Some of the bus routes in service have been discontinued.
noun
business plan; business policy
Used in a corporate context to refer to a company's strategic direction or operational policy. Less common than the transportation sense.
新社長は独自の営業路線を打ち出した。
The new president put forward his own business policy.