The New Zealand Transport Agency is introducing metered traffic lights at the Paremata roundabout this month.
NZTA says this is a solution to safety concerns and growing queues at Paremata roundabout during peak hours.
NZTA Senior Journey Manager Neil Walker says the Paremata roundabout on State Highway One has been an ongoing challenge for many years.
It is anticipated that the metered traffic lights on the southern approach to the roundabout will reduce peak travel times for vehicles exiting the railway station and significantly reduce southbound delays on State Highway One.
The lights will show only red and amber, there is no green signal.
Road users will prepare to stop on the amber light, stop on the red, and proceed to the roundabout when both lights are off.
The give way rules still apply at the roundabout at all times.
Porirua City Council Transport Manager Darrell Statham says the metered traffic lights are the most appropriate, cost-effective and achievable solution.
Construction of the metered lights has started this month and is expected to be completed by mid-July.