Vehicle BSMs (blind spot monitors) and traffic road sensors use K band and is the cause of a lot of false alerts on K.

The minute I start my vehicle, the K Band is going off due to the cars blind spot monitoring system

It has a great filtering system that filters out short bursts of K band like Blind Spot Monitoring, Adaptive Cruise Control and other

Them stupid Honda's with blind spot and lane monitoring that people drive seem to make just about any detector false on K band until you get past them

other times, the warning voice "KA Band ahead" will come out of the speakers on the actual radar detector ... and other times, it will commandeer my car stereo and scare the s**t out of everyone in the car at high volume