Police advise that traffic is extremely heavy and slow moving on State Highway One south bound from Levin to Wellington.
It is extremely slow around the Otaki and Forrest Lakes area.
Motorists are advised to drive to the weather conditions, expect that it will be a slow journey home and have patience.
People who have travelled long distances should consider pulling over for a break, as tiredness does not make for good decision making on the road.
Police patrols are out and about to ensure motorists return home safely.