The DfT plans to remove the payload disadvantage facing operators using alternatively-fuelled trucks on UK roads by increasing their maximum authorised weight by up to 1 tonne.
An update to an EU weights and dimensions directive coming into force in May 2017 means operators undertaking international journeys will automatically receive this extra weight allowance.
However, the government also wants to adopt the policy for domestic operations.
The DfT has also proposed scrapping UK legislation that forces operators to apply for separate authorisation if they wish to use gas-fuelled trucks.
Instead, it wants to enable trucks powered by hydrogen, CNG and LNG to be used on UK roads without special dispensation, as long as they have been type-approved to the relevant fuel system safety and emissions standards.
Transport minister John Hayes said: “If we are to encourage the uptake of less polluting technologies, or those with lower CO2 output and global warming potential, it is important that operators running cleaner vehicles do not suffer a competitive disadvantage.”
He added: “Our proposals do not require operators to change business practices or to purchase new vehicles. They are deregulatory and go a significant way to incentivise the uptake of less polluting vehicle technologies.”
A consultation on the above proposals will run until 2 November.
