OMAHA, Neb. (AP) — As freight trains have grown longer, the U.S. has seen an increase in the number of a type of derailment caused by the forces of railcars pushing and pulling against each other, the ...

These are frustrating times for the nation's railroads. At the start of the new millennium, the sector was humming along, fueled by heavy trade in basic commodities as well as a spike in imports.