The Transport Minister's confident the pothole prevention funding boost will result in more roads being fixed. 

The Transport Agency's confirmed it'll put more than $2 billion into prevention on state highways, and nearly $2 billion for local roads. 

It'll cover resealing, rehabilitation, and drainage maintenance. 

Simeon Brown told Mike Hosking that they're focused on getting the cost of traffic management down so more money goes towards actually fixing the infrastructure. 

He says the Government's already been working with NZTA on this issue and found 145 of 800 traffic management sites were not needed. 

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• Pothole prevention: Consistency needed over big funding injections