A. Ways-of-travel, County or private, shall be designated numerically according to the numerical grid set forth in the Official Map as established in subsections B and C of this Section.

B. Ways-of-travel, County or private, running generally or predominantly north and south shall be suffixed with the abbreviated name of the district in which they are situated; for example: 70th Ave. E, 62nd Avenue NW.

C. Ways-of-travel, County or private, running generally or predominantly east and west shall be suffixed with the abbreviated name of the district in which they are situated; for example: 224th St. E, 280th St. S, 40th St. NW.

D. The designations of ways-of-travel existing prior to the adoption of Ordinance No. 84-152, as amended, will not be changed to conform to the above requirements unless necessary to eliminate duplication or confusion in such designations within a district as defined in PCC 10.44.010.

E. All existing private roads which are presently unmarked or undesignated or designated according to the street to which they connect, and which serve, or are designed to serve, more than seven houses, will be designated separately from the street to which they connect.