The Transport Minister is focused on building essential infrastructure as the Auckland Regional Fuel Tax is scrapped.

Auckland motorists will save 11.5 cents a litre, with the tax removed from tomorrow.

Simeon Brown says hundreds of millions of dollars from the tax wasn't being spent at all.

"We're stopping the waste, we're focusing it back on the basics. And that remaining funding is going to go towards priority projects, such as the Eastern busway, more trains for the rail link and local roading upgrades."

He adds the Government isn't increasing fuel excise and road user charges in this term.

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