Warning signs are being installed to slow motorists travelling on State Highway 1 at 100km/h to just 60km/h at two dangerous Northland intersections.
Work began this week on installing the signs to alert motorists travelling too fast where Mangapai Rd intersects with SH1 at Oakleigh and where Shoemaker Rd crosses the highway at Waipu.
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Officials say the signs will improve safety at the intersections and by reducing the speed of cars on the highway, will make previously high-risk manoeuvres safer and easier for turning vehicles.
The same system of speed signs was installed on SH1 at the intersection with SH12.