The UK Freight Transport Association (FTA) believes that the UK should try out longer and heavier vehicles.
Chris Yarsley, the FTA's manager of road freight & enforcement policy, said that a study of these vehicles revealed their benefits.
The results of a survey, commissioned by the UK Department for Transport, are expected by the end of July and Mr Yarsley believes it will show the benefits of the vehicles.
Longer and heavier lorries would, in theory, mean fewer lorries were needed thereby reducing environmental impact and reducing the cost of a firm's supply chain.
He said that LHVs represented a carbon dioxide saving of "four times greater" than the next best option.
"The number of trucks needed to move a given volume of goods, and the number of miles travelled would be halved. And being new build trucks, these vehicles would be built to the next generation of emission standards, Euro 5, replacing trucks up to eight years old," he added.
Mr Yarsley was speaking at the OECD conference on Heavy Vehicle Transport Technology in Paris today (Monday May 19th).
