The most common misconception about speed limits is that putting up a sign will slow the speed of traffic, reduce accidents, and increase safety.
The truth is, most drivers drive at a speed that they consider to be comfortable and safe, regardless of the posted speed limit. The City usually installs signs at the entrance to a subdivision. Studies have shown that there are no significant changes in average vehicle speeds following the posting of new or revised speed limit signs. Furthermore, there is no direct relationship found between posted speed limits and accident frequency.