Article Photos: UPDATE: Oklahoma City Public Schools cancels evening activities, OCU closing at 3 p.m. due to winter weather 39/66

Traffic is backed up and motorists drive on the shoulder as Oklahoma City police block the southbound lanes of I-44 at SW 134 Street for a series of accidents on the highway in Oklahoma City Tuesday, Feb. 12, 2013. Photo by Paul B. Southerland, The Oklahoman