Allowing electric cars in bus and high-occupancy vehicle lanes is being suggested to encourage more drivers to take advantage of renewable power generation.
The idea has been put to Auckland Council by electric vehicle charging-point supplier Mark Yates, in a submission on the city's energy resilience and low-carbon action plan.
Mr Yates says bus and transit lanes should be open to plug-in hybrids, as well as pure electric cars, to reward drivers for cutting carbon emissions and help to compensative them for higher purchase prices.
He says they could be given special green or blue number plates, to help traffic enforcement officers and to raise the public profile of electric vehicles.