What type of control do GPS transmitters installed in public vehicles represent?

GPS transmitters installed in public vehicles represent a technical control. Technical controls are security measures that utilize technology to safeguard information and reduce vulnerabilities. In this context, the GPS system provides real-time tracking and monitoring of vehicle locations, which enhances fleet management, safety, and accountability.

By employing GPS technology, organizations can ensure compliance with regulations, improve route efficiency, and respond promptly to incidents involving their vehicles. This type of control is designed to manage risk through technology-driven solutions, making it an integral part of modern security and operational strategies.

Other options, while related to security measures, do not accurately describe the nature of GPS transmitters. Administrative controls focus on the policies and procedures established to manage risk, physical controls involve tangible measures to protect assets, and entrenched is not a standard classification in this context. Therefore, the technical aspect of GPS transmitters is what classifies them as a form of technical control.