"We are in the middle of a thorough joint assessment in relation to the CRL [rail link] and near the start of a process to consider alternative revenue sources that will not be concluded until the adoption of the 2015 Long Term Plan," he said.
That refers to an Auckland Council decision to establish a "consensus building group" to focus on road tolls, a regional fuel tax and higher parking charges while also keeping in mind options such as tourism levies.
But Transport Minister Gerry Brownlee says it is ridiculous for the council to think it can use taxpayer-funded roads to raise its own revenue, and has poured cold water on more fuel tax.
A poll of more than 1000 Aucklanders conducted for the Council for Infrastructure Development has meanwhile found higher support for road tolls to fix congestion and rail transport funds from National than Labour voters.
National voters indicated 66.8 per cent support for tolls, compared with 56.3 per cent of Labour backers.
POLL RESULTS
Support in principle for tolls
Overall - 63.8 per cent
Party voter support
* Act - 88.6 per cent
* Mana - 76.1 per cent
* National - 66.8 per cent
* NZ First - 65 per cent
* Greens - 60.9 per cent
* Labour - 56.3 per cent
* United Future - 51.8 per cent
* Maori Party - 25.3 per cent
Source - Horizon Research survey of 1061 Aucklanders. Margin of error of 3.1 per cent.