A two-car crash on State Highway 2 near Pakipaki blocked both lanes for close to an hour.
A spokeswoman for police said they had been called to the crash south of Hastings at 2.24pm.
The two cars initially blocked both lanes, though one lane was opened shortly after 3pm, she said.
Two people were assessed for injuries and treated at the scene but were not transported to hospital.
Emergency services were also called to a single vehicle crash on Ormond Rd in Twyford, Hastings about 12pm.