(Riverton, Wyo.) – Riverton motorists are reminded that even school school is out, the speed limits in the school zones have not changed. They are 20 mph year-around. Why? Children tend to congregate around playgrounds and drivers need to be alert and watch for the kiddos. Motorists should also know that Summer School is now underway in Riverton, just another reason to observe the 20 mph school speed zones.