The next 25 years hold a dramatic increase in the number of trucks on the road--and potential for crisis if American roadways can't meet the challenge. 

Get a handle on what's going on now and what needs to be done from "Unlocking Freight," the second part of a new report from the American Association of State Highway and Transportation Officials (AASHTO) entitled "Transportation Reboot: Restarting America's Most Essential Operating System."