How do non-intrusive detection devices function in relation to roadways?

Non-intrusive detection devices function by operating above or alongside the roadway, allowing them to monitor traffic without requiring any physical modification or connection to the road surface. These devices utilize various technologies, such as radar, infrared, or video analytics to gather data on vehicular movement and traffic flow. By being non-intrusive, they reduce the need for road closures or extensive construction activities during installation, thereby minimizing disruptions to traffic. This method not only enhances traffic management but also aids in data collection for real-time analysis and long-term planning without affecting the road infrastructure.

For context, options involving physical connection to the road or installation below the surface would not align with non-intrusive methods, as those approaches would require significant changes to the roadway itself, which is contrary to the concept of non-intrusiveness. Analyzing traffic patterns can be a function of these devices, but it does not describe the operational aspect that distinguishes non-intrusive detection.