I suspect setting it at the exact speed limit leads to excessive passing of your car under good conditions, decreasing safety. In poor conditions, it might be

I suspect setting it at the exact speed limit leads to excessive passing of your car under good conditions, decreasing safety. In poor conditions, it might be too fast. It is much safer to go with the flow of traffic, which can vary due to lots of factors, but on a clear freeway will generally be slightly above the speed limit. I tried the telsa full self driving mode at the speed limit, and it leads to frustrated people behind you. There is also an AUTO setting that adjusts to the flow of traffic and it blends much better with traffic. EDIT: data on speed variance vs safety (fig 4): https://www.fhwa.dot.gov/publications/research/safety/17098/003.cfm https://www.fhwa.dot.gov/publications/research/safety/17098/...