Until 2010 it was one of only two passenger-only lines in the country (the second one being the Johnsonville Line), since that year the two being joined by the Onehunga Branch and later by the Manukau Branch.
Until 2010, it was one of only two passenger-only lines in the country (the second being the Johnsonville Line). Since then, these two have been joined by the Onehunga Branch and subsequently by the Manukau Branch.