Auckland Transport says no action will be taken against the region's rail company over delayed train services on the Rugby World Cup's opening night.
An independent report to the agency's board by lawyer Chris Moore found the root cause of the disruption was the failure to accurately forecast the turnout for waterfront festivities.
The council's events agency, Auckland Tourism, Events and Economic Development (ATEED), expected a crowd of about 50,000 but on the night an estimated 200,000 people crammed into the waterfront area.
The rail network was overloaded and thousands of fans travelling to Eden Park suffered long delays, while hundreds missed the opening ceremony and kick-off.
Mr Moore told Morning Report there were many more people than expected using the train so train operator Veolia shouldn't have to take the blame.
Auckland Transport chief executive David Warburton says there will be no consequences for Veolia.
Mr Warburton says most of the recommended improvements to special match-day rail services are in place, and the opening-night problems are a closed book.
Mr Moore, meanwhile, says he is confident a repeat of the chaos can be avoided if the number of people coming into the party central area can be controlled.
He suggests restricting numbers to a pre-determined maximum by selling tickets in advance.
Veolia focus on "avoiding a repeat"
Veolia's managing director Graham Siberry sees no contractural issues arising from the report and says the company is now focusing on ensuring that changes are made to its services, to avoid a repeat of the opening night disruption.
He says the main changes implemented are more staff on trains and better communication.
Mr Siberry says Veolia is continuing to work closely with Auckland Transport, the agency which contracts it to run the trains.
Auckland Transport was less clear about whether there may be issues to resolve under Veolia's contract, but says the past two match weekends have run successfully.
ATEED says it is not commenting on the report at the moment.
Chief executive Michael Redman says once the tournament is over it will review all its work during the cup, including issues raised in the report.
There has been no comment from the mayor.
