CA Veh Code Section 27605

No person shall own or operate a motor vehicle painted in the manner described in Section 40800 to resemble a motor vehicle used by a peace officer or traffic officer on duty for the primary purpose of enforcing the provisions of Division 10 (commencing with Section 20000) or Division 11 (commencing with Section 21000) pursuant to Section 40800. The provisions of this section shall not apply to vehicles which are painted one solid color or to vehicles first registered on or before January 1, 1979. These provisions shall not apply to vehicles which are any of the following:

(a)

Owned by vehicle manufacturers or dealers.

(b)

Used by law enforcement agencies in the enforcement of the provisions of Division 10 (commencing with Section 20000) or Division 11 (commencing with Section 21000).

(c)

Owned by persons or companies who use the vehicles exclusively for movie or television production and display signs stating “movie car” prominently on the doors.

(d)

Owned by persons or companies who use the vehicles exclusively for funeral escort purposes.

(e)

Motorcycles, as defined in Section 400, without insignia.