What does the radar "lock" feature do?

The radar "lock" feature is designed to capture and hold the speed of the fastest vehicle detected within its operational range. When a radar unit locks onto a vehicle, it indicates that the radar has recorded that specific speed and it retains that value for the operator to see and document. This is particularly important in law enforcement where accurately identifying and citing the speed of a speeding vehicle is critical.

This function enhances the reliability and efficiency of speed enforcement by allowing officers to provide evidence of violations based on the fast-moving target, rather than multiple readings that could include other surrounding vehicles. The ability to "lock" the speed allows officers to focus on the vehicle in question, ensuring accurate reporting on traffic violations.

The other options do not accurately represent the primary purpose of the "lock" feature: resetting the device, averaging all detected speeds, or recording the highest speed since calibration reflect different functionalities that are not associated with the specific intent behind the "lock" feature.