Which written code contains the primary regulations for proprietary security officer businesses?

The California Private Security Services Act serves as the primary regulatory framework for proprietary security officer businesses. This act outlines the licensing requirements, operational guidelines, and standards of conduct for private security services in California. It is specifically designed to ensure that proprietary security officers operate within the defined legal boundaries and adhere to the established ethical practices necessary for the security profession.

Understanding the distinction between the various codes is vital. The California Business Code addresses broader aspects of business regulations but does not target security services directly. The California Security Service Act, while relevant to security services, has been succeeded and integrated into the Private Security Services Act. Lastly, the California Penal Code focuses on criminal law and does not provide specific regulations for the operation of security officer businesses. Therefore, the California Private Security Services Act is the correct answer as it centralizes the regulations pertinent to the proprietary security sector.