"Who will pay for that?" - migrants clog east Europe trade routes

Migrants queue as they wait to board a regional train at the main railway station in Munich, Germany September 13, 2015. REUTERS/Michaela Rehle

BATROVCI, Serbia/BUDAPEST (Reuters) - Border closures and tighter controls caused by record numbers of migrants are clogging up trade in southeast and central Europe, driving up costs and forcing transport companies to seek other routes.

Freight traffic through Serbia was severely disrupted when Hungary and Croatia closed their borders last month to cope with tens of thousands of migrants, most bound for richer nations further north.