An 82-year-old school bus driver helped by passengers when he fell ill says he is a victim of false allegations after he ordered children off the bus.
Peter Brown says he has lost interest in driving after the drama on Tuesday in which he was helped by schoolchildren to shift the gears and work the handbrake.
He praised the teenagers for coming to his aid, saying: "Full credit to them, they were excellent."
Police are now investigating.
A child on the bus, travelling from Greymouth High School, said Mr Brown drove into the back of another school bus, stalled and then rolled back into a third bus. Parents of children on the bus said the driver also did not stop at a stop sign and hit road cones on a straight stretch of road.