(a) Route 185 is from Route 92 in Hayward to Route 77 in Oakland.
(b) The relinquished former portion of Route 185 within the City of Hayward is not a state highway and is not eligible for adoption under Section 81. For the relinquished former portion of Route 185, the City of Hayward shall maintain within its jurisdiction signs directing motorists to the continuation of Route 185 or to the state highway system, as applicable, and shall ensure the continuity of traffic flow on the relinquished portion of Route 185, including any traffic signal progression.