Some opposition parties says proposed transport law changes will take decision-making away from local communities.
The amendments include almost halving the number of transport committee members throughout the country, and reducing the number of formal transport plans or strategies required.
One proposal is to abandon the requirement to have a cultural representative on transport committees.
The Green Party says the changes will result in more of the thinking that has led to the complex transport problems the country already faces.
The Labour Party says local roading advocates will lose out as the changes hand more power to central government.
A bill on the changes will be introduced to Parliament by the end of this year, or early next year.