In this Wednesday, July 24, 2013 file photo, officials work at the scene of a tractor trailer crash involving another vehicle which killed two on Interstate 81 northbound in Avoca, Pa. In 2013, the number of traffic deaths in the United States dropped just over 3 percent last year, about 90 deaths per day, compared with 92 in 2012, and the rate of deaths per 100 million miles traveled tied a record low, according to government statistics.
