An elderly man who volunteered to help school children safely cross the street was hurt this morning in a marked crosswalk. Seventy-eight-year-old James Sisco was knocked to the pavement and run over by a car driven by a 15-year-old boy from Davenport. The teenager, Joschua Davis, was not hurt. Police ticketed him for failing to yield to a pedestrian in a crosswalk. The kid was making a right turn — on red — when he struck the crossing guard. Records indicate the teen had a permit to drive to school. Because of the accident, the student will lose the right to drive for up to a year.