The New Zealand Transport Agency says it has fined two Auckland taxi drivers for refusing to take customers wanting to travel short distances.
Four other drivers are under investigation for similar offences.
It says all six drivers were working at night when they refused passengers.
Two drivers were both fined $400 following complaints from people unable to get rides in the central city.
An agency spokesman, Andy Thackwray, says there has recently been a rise in complaints over drivers refusing short fare trips.
Mr Thackwray says the agency's action sends a message to the industry and the public that the practise will not be tolerated.
He says people need to feel confident a taxi will take them to their destination - no matter the length of their journey or the time of the day.