Final answer:
California residents who drive on public highways or use parking facilities that are open to the public must have a CA Drivers License, but there are some exemptions.
Step-by-step explanation:
According to California law, residents who drive on public highways or use parking facilities that are open to the public are required to have a California driver's license, unless they fall into certain exemptions. These exemptions include individuals who are on active duty with the United States Armed Forces and hold a driver's license from their home state, individuals who are employed by the federal government and are driving official vehicles, and individuals who hold a valid driver's license from another country and are visiting California as a tourist or for business purposes.