Did a quick google and DMV states they must stop at all stop signs. https://www.dmv.ca.gov/portal/driver-education-and-safety/educational-materials/fast-facts/

Did a quick google and DMV states they must stop at all stop signs. https://www.dmv.ca.gov/portal/driver-education-and-safety/educational-materials/fast-facts/sharing-the-road-ffdl-37/#:~:text=Obey%20Traffic%20Signs%20and%20Signals,the%20light%20changes%20to%20red https://www.dmv.ca.gov/portal/driver-education-and-safety/ed....