The trucking and rail industry may have reached its peak this year

David McNew/Getty Images Demand in the US has been very strong for all modes of transportation. But freight shipment volumes appear to be slowing down from May peaks. Transportation is an infamously cyclical industry. Everyone in the industry is loving it. “The environment for us right now compared to where we were at the end of last year is dramatically different,” CSX CEO Jim Foote said Tuesday evening, when the railroad reported that earnings had jumped 72% from a year ago on a 6% revenue...