source: These only operate on arterial routes, therefore do not serve the city extensively, with most routes within Edinburgh are operated by Lothian Buses.
target: These only operate on arterial routes. Therefore, they do not serve the city extensively. Most routes within Edinburgh are operated by Lothian Buses.
references: These only operate on arterial routes. Therefore, they do not serve the city extensively. Most routes within Edinburgh are operated by Lothian Buses.