By The Nation
A crane train was sent from Bangkok to remove the carriages, which weigh 60 tonnes each.
The accident on Monday evening caused delays to trains on 18 northeastern routes.
Services were resumed at 10.45am with the Bangkok-Ubon Ratchathani train being the first to pass through the area.
The derailed trains also blocked the road at the rail crossing. The road was reopened at 10.20am after the derailed carriages were removed from the area.