(a) Route 66 is from Route 210 near San Dimas to Route 215 in San Bernardino. (b) (1) Notwithstanding subdivision (a), the commission may relinquish to the City of Fontana, the City of Rancho Cucamonga, the City of Rialto, and the City of Upland the respective portion of Route 66 that is located within the city limits or the sphere of influence of each city, upon terms and conditions the commission finds to be in the best interests of the state. (2) A relinquishment under this subdivision shall become effective immediately following the recordation by the county recorder of the relinquishment resolution containing the commission`s approval of the terms and conditions of the relinquishment. (3) On and after the effective date of the relinquishment, both of the following shall occur: (A) The portion of Route 66 relinquished under this subdivision shall cease to be a state highway. (B) The portion of Route 66 relinquished under this subdivision may not be considered for future adoption under Section 81. (c) The city shall ensure the continuity of traffic flow on the relinquished portion of Route 66, including any traffic signal progression. (d) For relinquished portions of Route 66, the city shall maintain signs directing motorists to the continuation of Route 66.
