As most shippers can tell from their rising freight bills, carriers have taken advantage of a seller’s market in transportation as the confluence of a strong economy, surging demand and labor and capacity shortages is causing multiple pain points for logisticians. That’s the conclusion of the 29th annual State of Logistics report produced by A.T. Kearney in partnership with the Council of Supply Chain Management Professionals (CSCMP) and Penske Logistics.