School buses are on the road again in Warren County as children made their way back to class yesterday. Durham School Service, which is entering its second year operating the school system’s bus service, is looking forward to a safe 2012-13.“According to the U.S. Department of Transportation, school buses are the safest way for students to travel,” said Brian Riley, general manager of Durham. “But everyone plays a role in helping children ride to school safely.”Durham would like to remind parents of these important safety tips:• Children should get plenty of rest so they won’t fall asleep on the bus.• Have your child at the bus stop on time.