Police received a call from a member of the public about a vehicle driving poorly in central Dunedin about noon on Saturday.
The vehicle reportedly went the wrong way around a roundabout, was mounting the kerb and running red lights, Acting Senior Sergeant Iain Notman, of Dunedin, said.
Police found the vehicle in Moray Pl.
The driver did not acknowledge police, who were both in front of and behind the vehicle, when they activated their flashing lights and sirens.
Police then boxed the vehicle in once it stopped at some traffic lights, Acting Snr Sgt Notman said.
"The 93-year-old male driver was assessed by ambulance and transported to hospital and has been medically forbidden to drive."
A Hato Hone St John spokesperson said they sent one ambulance to the scene.
They treated one patient who was transported to Dunedin Hospital in a moderate condition, the spokesperson said.
