Okay, I admit it. Sometimes I include waaaaay to much detail in the pieces I write. I've learned to write, walk away and come back to edit later - saving many forests worth of trees in the process.
I bet the person or group who ordered this sign for a school zone in Oakland County, Michigan wishes for a do-over with the editing pen. Maybe stating that the 25 mph limit applied from 6:30 a.m. to 4:30 p.m. would get the point across better.