Inspector Scott Webb, road policing manager for Tamaki Makaurau, told Newstalk ZB it was concerning the holiday road toll had already reached eight - double last year's toll for the entire holiday period.
"Any death is too many," he said.
"The repercussions for family and loved ones right across the spectrum is huge."
The holiday traffic was only going to get busier as a second wave of holidaymakers head off shortly, he said.
"Be patient. Plan ahead. Wear seatbelts."
Earlier today a person died following a two-vehicle crash on Nikau Rd in Pahiatua..
Yesterday afternoon, two people were killed by a crash between a milk tanker and a motorcycle in Southland.
The crash occurred at the Oreti River Bridge on the Riverton-Wallacetown Highway about 1.30pm.
A man died at the scene while a woman died in hospital a short time later.
The West Auckland community was left reeling after a crash on Boxing Day claimed the lives of two promising young men.
Jack Heritage Jnr and Viliami Muru-Teutau, both 20, died after the crash on the Triangle Rd bridge that links Massey and Henderson.
Two others were taken to hospital.
The holiday road toll's first victims came on Christmas Day with the deaths of Terry Charleston, 34, and Rebecca McAlees, 24, after a single-vehicle crash in southeast Auckland.