A California resident is any individual who meets any of the following:
Present in California for other than a temporary or transitory purpose.
Domiciled in California, but located outside California for a temporary or transitory purpose.
Domicile is defined for tax purposes as the place where you voluntarily establish yourself and family, not merely for a special or limited purpose, but with a present intention of making it your true, fixed, permanent home and principal establishment. It is the place where, whenever you are absent, you intend to return.
For a complete definition, refer to "Meaning of Domicile" in Publication 1031 - Guidelines for Determining Resident Status.
The State of California does not recognize an International Driving Permit (IDP) as a valid driver license. California does recognize a valid driver license that is issued by a foreign jurisdiction (country, state, territory) of which the license holder is a resident.