The notice will allow the movement of 36.5metre A-double trucks and introduce simplified, nationally consistent conditions, with improved cross-border access.

The A-double is a multiple combination with two semitrailers, linked by a converter dolly.

The VFF said the new notice promised to improve cross-border road freight movements and reduce red tape.

The Natioal Heavy Vehicle Regulator has also approved access for 30m A-doubles, 36.5m B-triples and AB-triples in SA, for the first time.

"What it will do is provide a huge boon for Victorian saleyards and abattoirs, as road trains will now be able to come over the border," Mr Vallance said.

It would give saleyards at Swan Hill and Ouyen, and abattoirs at Mildura and Swan Hill, an advantage.

Mr Vallance said at the moment, semi-trailers carted everything from sheep, cattle, goats and grains to almonds and carrots - "and whatever you like to grow, in the food bowl of Victoria," he said.

Mr Vallance said the VFF would continue to push for the extension of the road train network.

"We would like to see the road train routes extended in the future, to the freight hub at Horsham."

The Wimmera Intermodal Freight Terminal, Dooen, is used to rail containerised agricultural products to port.

"The amount of grain that gets transported to packing plants these days makes it attractive for NSW farmers to transport products south to Victoria, instead of Sydney or Newcastle," he said.

"It makes it more attractive for more business to come into Victoria."

The area covered by the new regulation ran from the west of Swan Hill, north of Ouyen and out to Pinaroo.

"You can get specific permits to go to Horsham, but it's a permit-by-permit basis," Mr Vallance said.

"That's red tape we would like to see removed, at some stage, in the future."

Mr Vallance said the safety record of trucks using the region was exceptional.

VFF Grains Group President Ashley Fraser said the notice paves the way for a simpler and more efficient road train network.

"This is fantastic news for transport operators and farmers in the north-west and is a great step towards increasing freight productivity across Victoria," Mr Fraser said.

Mr Fraser said the drought and COVID-19 pandemic has highlighted the critical importance of securing our food supply chains.

The VFF has been strongly lobbying for a permanent network in Victoria following the success of the temporary Drought Road Train Network in delivering hay and grain to drought-affected farmers in New South Wales and Queensland over the past 18 months.

"The recent Drought Road Train Network has highlighted the benefits of how increasing access for high productivity freight vehicles can reduce supply chain costs for farmers," Mr Fraser said.

The VFF will continue to work with the Department of Transport and the National Heavy Vehicle Regulator (NHVR) to improve the efficient movement of hay and grain.

Taranyurk grain and livestock producer Marshall Rodda, who farms west of Warracknabeal, said it would allow producers to get their grain from "a to b" in a much more "price friendly" manner.

"We also need the government to step up and make the roads much more road train friendly," Mr Rodda said.

"We are in a competitive world, and we need to keep up."

He said semi-trailers also brought fertiliser and other farm inputs, into the region.

He said a two-trailer road train was not much longer than a b-double.

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