Carterton District Council is querying the transport agency's plan to install further side barriers along SH2.

Speaking to transport consultant Roger Boulter at a CDC meeting on Wednesday, Mayor John Booth said many people were raising concerns about the use of the side barriers.

"My concern is that it's a safety enhancement but a lot of people say it's making it much more dangerous."

He asked if Mr Boulter could raise the issue next time he met with the agency's engineers.

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"I think it's worth having that discussion because a lot of people have expressed concern," Mr Booth said.

Mr Boulter agreed to raise the issue with NZTA, saying it would be worth asking if they might have made a mistake.

"I've said to them, are you sure this is the right thing because I thought their approach on highways was a clear zone."

Mr Boulter has been engaged by council to undertake a review of its walking and cycling strategy, adopted in 2011.