(25)The greater presence of alternatively-fuelled vehicles is key to the green transition. The possibility of new models of increased mass being available in categories B and BE driving licences should be taken into consideration in this Directive. Therefore, holders of a category B or BE driving licence should be allowed, subject to driving experience in their obtained category, to drive motor vehicles, both for the purpose of driving persons and goods, powered wholly or in part by alternative fuels, which exceed a maximum authorised mass of 3 500 kg.