 These major arterials actually shift over to align with other roads, which causes them to have the name changed.This numeric system extends to the furthest reaches of unincorporated Pierce County (with roads outside of the city carrying "East", "West", "North West", and "South West", except on the Key Peninsula, which retains the north–south streets but chooses the Pierce–Kitsap county line as the zero point for east–west streets.Key Peninsula's roads also carry a "KP N" or "KP S" ("Key Peninsula North" or "Key Peninsula South") designation at the end of the street name.