Work is set to start on the first of two central Whangārei intersection upgrades which are happening alongside an upgrade to State Highway 1.
The Porowini Ave-Tarewa Rd intersection is first in line.
The upgrade will provide an additional lane on Porowini Ave at the western side of the intersection and an extra lane on Tarewa Rd at the northern side of the intersection.
Whangārei District Council roading manager Jeff Devine said the work will start on the Porowini Ave and Tarewa Rd intersection this month and should be completed in December.
"This will allow the traffic signals at the intersection to operate much more efficiently and will make traffic move much more smoothly during the evening peak."