As used in this Chapter, the traffic control areas shall be within the following boundaries: downtown Portland, West Burnside on the north, S.W. Clay on the south, S.W. Front on the east, and S.W. 13th Street on the west; Lloyd Center area, N.E. Weidler Street on the north, N.E. Holladay Street on the south, N.E. 16th Avenue on the east, and N.E. Grand Avenue on the west.