What hours are school zone speed limits lowered?

The hours that school zone speed limits are lowered vary and are not always uniform even within a state. For example, Oregon school speed limits lower on school days from 7 a.m. to 5 p.m. or when lights by speed limit signs flash, according to the Oregon Department of Transportation.

New York State has more possibilities. The speed limit near schools is reduced in some areas every school day between 7 a.m. and 6 p. m., according to the state's department of transportation. In other locations the times are 9 a.m. to 4 p.m. or 7 a.m. to 9 a.m. and 2 p.m. to 4 p.m.