Several road safety experts have voiced concern about the new batch of changes for speed limits.

Transport Minister Simeon Brown says all blanket speed limit reductions on local streets, arterial roads, and state highways will be reversed by July next year.

He says there'll be reduced variable speed limits outside schools during pick up and drop off times by July 2026.

Professor Simon Kingham co-wrote an open letter urging the Government to rethink these changes - and he's still disappointed with them.

"I'm disappointed because they are completely contrary to all the evidence about health, safety, well-being, emissions and all sorts of other things - but I'm unfortunately not surprised, because the Minister hasn't shown any apparent interest in science and evidence."

LISTEN ABOVE

• Govt seeking feedback on 120km/h speed limits as reductions reversed
• 'There's a clear direction': Transport Minister undeterred by Northland comments over wiped speed reductions
• Simeon Brown blasts 'red tape and green tape', names five key issues for Auckland
• How local councils responded to Government's move to scrap speed limit plan
• National ditches Labour's 'anti-car ideology'- promises to restore speed limits