Here's one way to reduce traffic congestion.

[harm_less]

That could work, providing there's a really good public transport system - or lots of bicycles or similar.


https://www.youtube.com/watch?v=LGDSkFQEOjo

Singapore has an outstanding public transport system. Their rapid transit light rail system which is very cheap to travel on and it has all been built since the late 1980s including a lot of underground routes. Auckland could take a lesson from this but the cost would meet resistance.