There are two types of school Speed Zones I know about. One is 20 miles per hour between the hours of 7 and 5. The other is, 20 miles per hour when children are present. I often wondered, what do they mean by children? Is that a child or short person? Is that child too old? Then I found out they meant when children are in the crosswalk. Why couldn't they just say that? Why couldn't...