Not only that, but there is a study [1] that shows that traffic speeds do not change significantly even if the speed limit dies have a significant change. [1]

Not only that, but there is a study [1] that shows that traffic speeds do not change significantly even if the speed limit dies have a significant change. [1] http://www.ibiblio.org/rdu/sl-irrel/ http://www.ibiblio.org/rdu/sl-irrel/