A truck and trailer unit veered off SH1 and into a ditch, between Norwood Lane and Coleman's Rd near Marton, at 6am on Saturday morning.

Palmerston North Police attended and it appeared no one was injured, a police media spokesman said.

In a second truck incident on Saturday morning, a truck carrying wine went off SH1 near Ohingaiti. The highway had to be closed for half an hour at around 9.30. No one was injured.