https://www.motorists.org/blog/speed-limits-slower-safer/ https://www.motorists.org/blog/speed-limits-slower-safer/ this has some good data. Going too fast or t

https://www.motorists.org/blog/speed-limits-slower-safer/ https://www.motorists.org/blog/speed-limits-slower-safer/ this has some good data. Going too fast or too slow are both dangerous. When merging on the highway, you should be at the speed of traffic to minimize risk.