ARLINGTON, Va., April 30, 2014 /PRNewswire-USNewswire/ — Congestion on the nation’s Interstate highways added over $9.2 billion in operational costs to the trucking industry in 2013, according to research released today by the American Transportation Research Institute (ATRI).  ATRI, the trucking industry’s not-for-profit research institute, utilized motor carrier financial data along with billions of anonymous truck GPS data points to calculate congestion delays and costs on each mile of Interstate roadway.  Delay totaled over 141 million hours of lost productivity, which equated to over 51,000 truck drivers sitting idle for a working year.