A trial of double deck trailers by Birds Eye, Partner Logistics and DHL is taking eight trucks a week off the road.
The double-deck trailers, which hold 50 per cent more than a conventional trailer, are being used to transport pallets of frozen goods from the warehouse to the distribution centre.
The trial was based on the 80 mile journey between the Partner Logistics cold store in Wisbech and a customer retail distribution centre in Daventry.
So far it taken a total of an equivalent 43 trucks off the road, saving over 4,500kg of CO2 emissions.
Graham Watling, distribution manager UK at Birds Eye, said: "Double deck trailers allow us to look at the best possible opportunities to improve the efficiency of our deliveries for our customers, while reducing our road miles. In our best week so far we have been able to take the equivalent of eight trucks off the road, saving over 300 litres of diesel.
Birds Eye has estimated that now the double deck trailers are running regularly on this route they will see a reduction of two per cent in their annual total road miles. Plans to extend the project to include further routes are underway.
Eelco Schnabel, Commercial Director at Partner Logistics, said: "We are very pleased to have worked with Birds Eye and DHL on this energy saving project. All of our European warehouses have been built with a focus on sustainability and we proactively try to reduce carbon emissions in any way we can."