lines in operation; routes in service
Refers to actual railroad or bus lines currently in operation, as opposed to planned or discontinued ones.
This railway company's lines in operation exceed a total length of 500 km.
Some of the bus routes in service have been discontinued.
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.
The new president put forward his own business policy.