VEH § 22520.5

(a) No person shall solicit, display, sell, offer for sale, or otherwise vend or attempt to vend any merchandise or service while being wholly or partly within any of the following:

(1) The right-of-way of any freeway, including any on ramp, off ramp, or roadway shoulder which lies within the right-of-way of the freeway.

(2) Any roadway or adjacent shoulder within 500 feet of a freeway off ramp or on ramp.

(3) Any sidewalk within 500 feet of a freeway off ramp or on ramp, when vending or attempting to vend to vehicular traffic.

(b) Subdivision (a) does not apply to a roadside rest area or vista point located within a freeway right-of-way which is subject to Section 22520.6, to a tow truck or service vehicle rendering assistance to a disabled vehicle, or to a person issued a permit to vend upon the freeway pursuant to Section 670 of the Streets and Highways Code.

(c) A violation of this section is an infraction. A second or subsequent conviction of a violation of this section is a misdemeanor.