Motorists are being warned of significant delays north of Otaki as holidaymakers return to Wellington today.
The NZ Transport agency said queues were expected, especially with the Otaki Races also taking place today.
It said most of the delays occurred north of the Otaki roundabout, but traffic was expected to flow more freely once drivers clear this area.
The agency has advised motorists to consider stopping in Levin or Foxton to keep refreshed.