Northland has 3200km of coastline - much of which is used as a playground for motorbikes, quads and other vehicles.
But police are warning the beach is not a playground but a road on which full traffic laws apply - including the requirements that vehicles be roadworthy and drivers be licensed.
It comes after 9-year-old Rowan Willis, of Auckland, died when his go-kart hit soft sand and rolled at Ninety Mile Beach on January 10.
His death followed a string of beach incidents in the Far North in the past few weeks - including a buggy accident on Ninety Mile Beach on December 29, a quad bike crash near Mitimiti, North Hokianga, on December 28, and a sports quad accident near Tauroa Pt on December 24.
"If you're wanting to drive or ride on the beach, the same rules apply as for a highway or a suburban road - there's no exemptions in place for the beach," Northland's road policing manager Inspector Murray Hodson said.