VicRoads has extended the state's drought road train network to include the Calder Highway.
Farmers will now be able to apply for a permit to transport hay and feed to drought affected areas in NSW and Queensland on road trains along the Calder Hwy from Charlton to Mildura.
Victorian Farmers Federation Grains Group President Ash Fraser said the decision built on the existing drought road train network, on the Borung and Henty highways.
"The VFF, with our members, have been calling out for measures to make it easier for hay and fodder to reach farmers in need," Mr Fraser said.
He said the extension came just in time for this year's harvest.
"VicRoads should be congratulated for listening and acting," Mr Fraser said.
"This change will have a positive impact on many, both those transporting feed and those farmers urgently needing supplies.
"Given the current dry conditions, facilitating the efficient movement of hay and grain to drought-affected farmers is critical."
He said he looked forward to working with VicRoads on increasing access for high productivity freight vehicles, to improve the efficient movement of food and fibre.
VicRoads has announced the expanded network will now include the route south of Ouyen, to Horsham, from Warracknabeal to Dimboola and to the South Australian border.
Permits will also be issued for transport as far south as Charlton on the Calder Highway.
Permits will be issued for a six-month period and operators will be required to comply with the set conditions.