Section 21650.1 Of Article 2.5. Non-public-use Airports From California Public Utilities Code >> Division 9. >> Part 1. >> Chapter 4. >> Article 2.5.
21650.1
. An airport shall be marked as required by rule of the
department with letters or symbol selected by the department to
designate that the airport is not open to the general public. In
selecting the letters or symbol, the department shall be guided by
letters or symbols currently in use by the Federal Aviation
Administration for similar or comparable purposes.