Potential for cutting lorry emissions

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The report, done at the Technical University of Graz, is based on tests of fuel efficiency improvements arising from better trailer and tyre designs. Air resistance and adhesion between tyres and road surfaces were also looked at, using a new test procedure that involved constant speeds and slowing down, with the results confirming the potential for lower emissions. The authors say the test procedures need further refining before they can be used for certification or type approval.