The Government is confident it can allay fears held by Auckland Regional Council that some public transport projects will left without funding after a regional fuel tax is axed.
The ARC says it needs to know within weeks how several projects on a list worth more than $200 million should proceed.
It says it has no way after June to finish paying for new diesel trains currently being built, or to continue work on a new railway station at Newmarket.
The Government has listed the station and diesel trains among works it would not fund, but Transport Minister Steven Joyce says he's confident he can put an end to the uncertainty within weeks.
Mr Joyce also says the axing of the regional fuel tax should have been no surprise to the council, as he signalled it in his first meeting with the the chairman, after becoming minister.