Section 21701 Of Article 2. Additional Driving Rules From California Vehicle Code >> Division 11. >> Chapter 3. >> Article 2.

. No person shall wilfully interfere with the driver of a vehicle or with the mechanism thereof in such manner as to affect the driver's control of the vehicle. The provisions of this section shall not apply to a drivers' license examiner or other employee of the Department of Motor Vehicles when conducting the road or driving test of an applicant for a driver's license nor to a person giving instruction as a part of a course in driver training conducted by a public school, educational institution or a driver training school licensed by the Department of Motor Vehicles.