What are the two modes of operation for radar devices?

The two modes of operation for radar devices are stationary and moving mode. In stationary mode, the radar is typically positioned in a fixed location, allowing it to monitor the speed of vehicles passing by without moving itself. This is often used in speed enforcement on highways where an officer may set up a radar unit to detect speeding vehicles from a set position.

In moving mode, the radar device is mounted in a moving vehicle, which allows it to measure the speed of other vehicles while in motion. This mode is particularly useful for law enforcement officers who are conducting speed enforcement while driving, as it enables them to capture the speeds of both oncoming and passing traffic. This versatility between the two modes enhances the effectiveness of speed detection methodologies used by law enforcement agencies.

While other options may relate to certain functionalities of radar systems, they do not accurately capture the primary operational modes used specifically for speed detection.