According to statistics just released by the U.S. Department of Transportation’s Bureau of Transportation Statistics (BTS), American manufacturers and related industry shipped 11.7 billion tons of goods valued at over $13.6 trillion in 2012. Trucks moved approximately 70 percent of these goods, both by value and by weight. Multiple mode shipments represented about 13 percent of these goods by value but only 3 percent by weight, while rail represented 16 percent of goods shipped by weight and 3 percent by value. More detailed information from the BTS can be found here.