Tonight as I'm waiting at the red light to turn left onto the freeway, I start getting little blips of Ka from the rear. The light turns green, and I make my turn, but the Ka blips continue, still from the rear. The only vehicle behind me both before the turn and after was a Honda Civic. Conclusion: Ka false from a ****ty radar detector in the Civic. So I put the hammer down and fearlessly merged onto the freeway at 75 MPH.
Without the arrows I might not have been so confident.