(a) Route 110 is from 9th Street in San Pedro to Glenarm Street in Pasadena.
(b) The relinquished former portion of Route 110 that is located between Glenarm Street and Colorado Boulevard in Pasadena is not a state highway and is not eligible for adoption under Section 81.
(c) (1) Notwithstanding subdivision (a), the commission may relinquish to the City of Los Angeles the portion of Route 110 located within the city limits from Route 47 to 9th Street pursuant to the terms of a cooperative agreement between the city and the department, upon a determination by the commission that the relinquishment is 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, all of the following shall occur:
(A) The portion of Route 110 relinquished under this subdivision shall cease to be a state highway.
(B) The portion of Route 110 relinquished under this subdivision may not be considered for future adoption under Section 81.
(C) Route 110 shall be from Route 47 in San Pedro to Glenarm Street in Pasadena.
(4) For the portion of Route 110 that is relinquished under this subdivision, the city shall maintain within its jurisdiction signs directing motorists to the continuation of Route 110.