Police are urging holiday-makers to have patience on their return home.
Poor weather conditions, a series of small vehicle crashes and normal traffic delays are causing problems for many travellers returning home after the Christmas Holidays.
The lower North Island is being drenched by a band of heavy rain moving down the country. About 150mm fell in Gisborne earlier today, while more than 80mm fell in northern Hawkes Bay.
A nose to tail on the northbound lane near Warkworth and the normal bottle neck at Wellsford on State Highway One are causing long tail backs in both directions.
There are reports that traffic on the Desert Road is extremely heavy, caused by severe weather conditions with heavy rain and strong winds. Motorists are being advised to drive with extreme caution.