New Zealanders and Australians will be able to travel freely between their countries as of April 19, making the Tasman bubble two-way and bringing an estimated $1 billion into the New Zealand economy. Since October, New Zealanders could visit Australia without quarantining. In case of a community outbreak in Australia, New Zealanders may have to stay put, self-isolate or be tested on their return. The travel arrangement will operate on a 'traffic lights' approach -- continue, pause and suspend. The decision is not expected to reduce pressure on managed quarantine spots in New Zealand, as these are needed for travelers from elsewhere.