It isn't RD3, it's No 3 Rd. And I can only find a single one of these in New Zealand. There is a No 3 Arterial and a couple of No 3 Line. But only a single No 3 Road. Not a million miles from Te Puke, where there's also No 1 Rd, No 2 Rd and No 4 Rd. For some reason they skipped or lost No 3 Rd on the Hauraki Plains, but they have a selection of others from No 1 to No 9.The Station Rd is near Matamata.