For extra credit, wanna do an essay on The Homogeneous Experience In Athleticism - Achieving Maximum Value for Time in Ski Groups?
judging by alot of comments on here its clear that most of you do understand traffic dynamics.
I person hitting their brakes can cause a wave that will last for miles, basically people are stupid and do not how to drive for the highest performance whether that is efficiency or speed.
the thing is people follow to close and do pay attention. I have ridden in only a handful of drivers car who do not do this. once one person hit their brakes its all over and there is now a traffic shock wave going backwards. Limiting everyone to the same speed creates a homogeneous experince instead of everyone doing something different. Its going to work, there is no doubt in my mind the physics and psychology behind are solid.