Present means "present in the school." It's not always observable while driving by if you need to obey the reduced limit or not. California does it and I find

Present means "present in the school." It's not always observable while driving by if you need to obey the reduced limit or not. California does it and I find it absurd. Many other states setup a flashing yellow light and program the light with the school schedule. Then the limit only applies "when light is flashing." Far more sensible.