KEEPING THE RAILROADS FLUID.

Union Pacific offer a primer on train dispatching.  Kindly be guided by the possibility that the description is pollyannish.  "Train priorities are determined by the train type. For instance, passenger trains are typically given highest priority and manifest trains (trains with various car types destined for various customers) the lowest."  We wouldn't have the ongoing scraps between Amtrak and the freight railroads if that weren't so often honored in the breach.