Cal. Streets and Highways Code § 223

(a) The department may contract with other governmental agencies or private organizations or individuals for the construction and operation of traveler service information facilities and for the maintenance of all or any of these safety roadside rests where it deems it necessary or desirable. (b) Notwithstanding subdivision (a), Section 19130 of the Government Code, or any other provision of law, the department may contract with public and private nonprofit organizations pursuant to Section 19404 of the Welfare and Institutions Code, for the operation of traveler service information facilities and for the maintenance of all or any of these safety roadside rests where it deems it necessary or desirable. Contracts entered into pursuant to this subdivision shall not cause displacement of civil service employees. For purposes of this section, “displacement” includes layoff, demotion, involuntary transfer to a new class, involuntary transfer to a new location requiring a change of residence, and time base reductions. “Displacement” does not include changes in shifts or days off, or reassignment to other positions within the same class and general location.