>/reducing/ comf(ortable?) deceleration keeps things running smoother than higher values This is basically what the dynamic speed limits do on motorways in the

>/reducing/ comf(ortable?) deceleration keeps things running smoother than higher values This is basically what the dynamic speed limits do on motorways in the UK - if there's congestion, the speed limit is reduced on the section of road leading up to the congestion. It reduces the number of cars flowing into the traffic jam temporarily, which helps to smooth out the overall flow.