Adaptive Cruise Control problems of the 2021 Honda Insight

I previously reported this issue to NHTSA and was given the case numbrer 1140044. Here is my recent letter to Honda. Case #13091850 (I was informed that this case was closed) although I did not agree that the adaptive cruise control issue was resolved, Honda closed the referenced case. I am writing to confirm that the issue is not resolved. I rarely drive the Insight but did so yesterday on a two lanes in each direction, limited access highway. Here are my experiences: on multiple occasions while driving at 60 mph in the right hand lane with acc controlling the distance to the vehicle in front of me, the vehicle in front moved to the exit lane clearing the path in front of me. As the exiting vehicle slowed in the exit lane, the acc applied the Insight's brakes, quickly reducing my speed to 30 mph in the driving lane. This sudden slow down exposed me to possible rear end collisions by following vehicles that were surprised by Insight's slowing in the driving lane. Once while driving at 70 mph in the passing lane with the acc controlling the distance to the vehicle in front of me, the leading vehicle moved to the right lane, clearing the lane in front of me. When the Insight approached the vehicle that had moved to the driving lane and was then going at a slower speed, the Insight applied its brakes, quickly slowing the Insight to 40-50 mph. Again this sudden slowdown exposed me to a rear end collision by the vehicle behind me that was also going 70 mph. This is the same issue that I reported earlier. Despite the Honda dealer where I bought the vehicle servicing the acc system under warranty, this unsafe issue still exists. It seems that the acc is not "unlocking" from a leading vehicle when it moves to the right despite the path directly forward being clear. Please advise as to Honda's next step in resolving this safety issue. Thanks arthur schwope 281 holden wood rd concord, MA 01742.

The recent NHTSA disclosure of issues with Honda's driver-assistance technologies causes me to write about the troubling performance of adaptive cruise control on my 2021 Insight. When following another vehicle on controlled access highways, the system works fine. However if the vehicle in front enters an exit lane and slows, my car is slowed to the point that the brakes are fully applied, causing vehicles behind me slam on their brakes or swerve to avoid rear-ending me. The acc does not "let go" of the car in front of me.