Tiny house trailer width from 2.55m to 3.09m is transported as a load on a trailer and fails into a category 1 over dimension load. The following are rules around this from NZTA.

General

• The operator of an overdimension vehicle must ensure the vehicle can safely complete its journey.

• An overdimension vehicle must not travel on a road if fog, heavy rain, hail or other factors restrict visibility to less than 350 metres.

  
  

Travel in Daylight hours

• When travelling during daylight hours, overdimension vehicles must have their headlights on low beam.

• Fluorescent yellow flags or hazard markers must be attached to indicate the excess width of the load (ie 4 corners)

Travel hours of Darkness

• There must be steady white or amber lights at the front and steady red or amber lights at the rear. There are to be positioned to mark the extents of the load.

• Must have side marker lamps spaced approximately 3 metres apart – amber colour to the front and red to the rear.

• Retro-reflective hazard markers must be attached to indicate the excess width of the load (ie 4 corners)

Restricted Travel Times

City areas - Monday to Friday

• 7am to 9am or 4pm to 6pm

Weekends

• 10am to 1pm or 4pm to 7pm

• Or at times when there are unusually heavy traffic volumes

Lights

Front and rear lights plus number plate need to be visible at all times.

More info can be find on Factsheet 53a by NZTA.

More info around tiny houses from NZTA here.