The man at the centre of Wellington's Terrace Tunnel standoff has been sentenced to three months community detention and is disqualified from driving for nine months.
The 32-year-old, whose name has been permanently supressed, crashed into another car while driving the wrong way on State Highway 1 at the city end of the tunnel in January.
Armed with a knife, he then climbed onto the pipes above the tunnel and stayed there for the next 10 hours.
More than 20 police staff including AOS, negotiators and dog teams were involved at the time.