I just encountered at NY State Trooper running 34.7 C/O and picked him up well over a mile in advance on a curvy road with hills. My V1 held on to the signal all the time and I had about 50 seconds to adjust my speed. Then, a little while later while getting on to the parkway, heading in the other direction, my V1 alerted to Ka, however this time there was a trooper sitting in the middle of the road! He had left his car in the right lane and was running on foot after a guy who just crashed his motorcycle!! I guess the V1 is also great at warning me about impending danger in the road ahead LOL.