The Danish government has called for a new study into the feasibility of introducing a kilometre fee for vehicles in response to increasing traffic problems especially in the Greater Copenhagen area and following pressure from the Copenhagen city council. The national ruling Liberal party had previously opposed any new charges being levied as these would be at odds with its tax freeze policy. Traffic affairs spokesman, Erling Bonnesen, has suggested that additional costs to motorists could be offset by a gradual reduction in motor-vehicle taxes, stressing that the new charges would be income-neutral for the government.