sentences:  Student members were taught to "direct children, not traffic," as they had authority over the students as they crossed streets, but did not have any authority over vehicular traffic on the streets.With the rising use of automobiles and the attendant concerns for the well-being of students as they walked to school, the Chicago Motor Club pioneered the concept of School Safety Patrols in 1920.In 1921, St. Paul, Minnesota was one of the first cities in the nation to start a school safety patrol.