While announced as permanent, an NZTA spokesperson has since said there will be a review after 12 months.
Opponents have questioned the veracity of criticising public consultation last year and claim a dearth of a factual basis or lack of social and economic impact for the decision, and suggest that, at the least, the limit should be no lower than 90km/h.
Similar reviews have taken place in other regions, with State Highway 2 between Napier and Wairoa expected to be a focus later this year, along with a proposal for the same highway through Wairarapa.
Meanwhile, Napier City Council, which lowered some speed limits on rural roads and in school zones in its own local review last year, will next week consider recommendations for more changes which were mooted during its review process.
A ratepayer proposal for lowering the speed limit from 100km/h on Willowbank Ave and others relating to three school zones will be considered at a council meeting next Thursday, having been through a bylaw hearing process in December and council committee stages.