The National Party is moving to limit any political damage after its transport spokesman said its policies would lead to some motorists paying up to $50 a week for the cost of new roads.
Deputy party leader Bill English has backed away from estimates previously given by Maurice Williamson.
Mr Williamson said on Agenda on Sunday that a National Government would build new roading projects through Public Private Partnerships, which could impose tolls of between $3 - $5 per trip.
However, Mr English says those comments are "a bit exuberant."
He told Nine to Noon on Monday that New Zealand has little opportunity for tolls because it does not have the traffic volumes of countries such as Australia. He said $2 tolls are more reasonable.
Transport Minister Annette King said National seems to have several different positions on road tolls.
She said the Government has built considerable infrastructure without the need for PPPs.