A driver with a prosthetic leg slipped on the accelerator, causing a crash with two other cars, police say.
Senior Sergeant Anthony Bond, of Dunedin, said officers attended the crash in Stuart St about 8pm on Saturday.
A 75-year-old man with a prosthetic leg was wearing different shoes from normal, Snr Sgt Bond said.
Due to wet weather the soles were wet.
When the man went to leave his parallel park, his foot slipped and got jammed between the brake and accelerator, causing the car to go quickly backwards into the car behind him.
He put the car into drive and it went forward, crashing into the car in front of him.
There was a small amount of damage to the cars and no injuries were reported, Snr Sgt Bond said.