Delprof Windows 2008 R2 Download. California Drivers License Restrictions Depending on the type of a drivers license that you currently hold, certain California drivers license restrictions may apply to it. This particularly concerns drivers under the age of 18 who must observe all California provisional driver's license restrictions for at least 12 months or until they reach the age of 18, whatever comes first. Apart from provisional license restrictions, other California driver license restrictions may limit your ability to operate a vehicle under certain conditions. For example, a very common type of a restriction is a bioptic lens restriction that requires you to wear glasses or contact lenses while driving. California Drivers License Restriction Codes Unfortunately, we were unable to locate a list of the California driver's license restriction codes, so if you are trying to find what a specific code means, you should turn to the California Department of Motor Vehicle and they will decipher the code for you. The most common restrictions that are placed on are the bioptic lens and daytime driving only.