I have checked most of the posts on Dynamic Radar Cruise Control (DRCC) but none answer my question clearly. Here is the scenario...The vehicle in front has cruise control set at 55 MPH, I have my cruise control set at 75 MPH. As I approach the car in front of me, I feel my Prius slowing down. I'm curious what happens with the brake lights. I assume when the friction brakes are used, the brake lights come on as my Prius approaches the car travelling slower..Do the friction brakes remain engaged to keep the distance? Also, does my Prius "ride the brakes" to maintain the constant distance between me and the car ahead? Does it pulse the brakes? Does it release and engage, release and engage? I'm wondering if I'm driving the drivers behind me crazy or not.. Thanks The link below is a nice video abut the DRCC..