National claims New Zealanders are being conned if they think the Government's transport plan will improve roads.

The Government's increasing fuel taxes by nine to 12 cents a litre to fund an overhaul of the country's transport system.

State highway funding will be cut by 11-per cent, while public transport funding will receive a 46-percent boost.

Finance spokesperson Amy Adams told Mike Hosking the plan will see a reduction in spending on state highway networks - something every New Zealander uses.

"This is not going to improve our roads this is about putting a trolley system in Auckland and putting in some cycle lanes. If this was actually taxing motorist to improve our roading and motorists could see that connection that would be a different debate [but] that's not what we are talking about."

LISTEN ABOVE AS AMY ADAMS AND STUART NASH SPEAK WITH MIKE HOSKING