What function does the "lock" feature serve in RADAR devices?

The "lock" feature in RADAR devices is primarily used to freeze the speed reading for documentation purposes. When the lock function is activated, it captures and holds the current speed measurement on the display. This allows the operator to document the speed of a targeted vehicle without the reading changing, which is essential for providing accurate and verifiable evidence in situations such as traffic stops or when issuing citations.

This feature ensures that the recorded speed is reliable and prevents any subsequent interference from other vehicles or environmental factors that could affect the reading. It aids in maintaining the integrity of the speed measurement, making it a critical aspect of RADAR operations in enforcement scenarios.