The trucking industry says it is backing the Government, in its speed limit conflict with Auckland Council.

The two groups have been having a war of words, over raising the speed limits and bringing in variable limits around schools.

Auckland Council wants more power to set their own limits, the final decision is the Government's though.

National Road Carriers Policy and Advocacy General Manager, James Smith, says that's how it should be.

"The rules around setting speed limits should be set by central Government, so you get consistency throughout the country. And then, the local Governments would need a very, very good reason to stray from those guidelines."

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