Trains in the Capital are still running on a Saturday timetable due to an ongoing signal fault.
Commuters have been told to expect delays and if possible find alternative ways to get into the city.
The motorways are busy, and a crash on State Highway 1 near Churton Park has already caused some delays this morning.
It's been cleared but Waka Kotahi warns it may take time for congestion to ease.
RNZ producer Melanie Phipps was one of those in traffic, and told Morning Report it was slow going.
Reporter Rayssa Almeida spoke to Corin Dann from Wellington train station.