Radar Detector K Band: What Drivers Need to Know

It means the detector has received a signal in the K-band range. Police radar is one possible source, but automatic doors and vehicle systems can also trigger K-band alerts.

Use varies by agency and location. Check current local enforcement information; a detector alert alone cannot identify who transmitted the signal.

Repeated alerts may come from a fixed non-police source or a vehicle safety system. Use the device manual to review filtering and GPS lockout options, and do not suppress alerts indiscriminately.

That depends on local use and your detector settings. Disabling a band can prevent alerts to signals the device would otherwise detect, so consult its manual and local rules.