Mein said they spent a good part of last year talking to people in Wellington about what the issues and problems were with transport.
"We've got a congestion issue, which isn't unusual in major cities. The problem with Wellington is we've got a very constrained system which runs through the CBD . . . there's a small number of quite congested corridors and not a lot of alternatives."
Mein said they had "a very wide range of possible ideas" on how to sort the problem, and were looking at "pulling those together into various packages".
"We're not looking at single solutions, because I think that's patently not going to work."
Instead they would look at combinations of ideas to address the congestion issue.
This would include improving roads and public transport, cycling and walking networks, and looking at pricing options.
"We need to look at things on a much more holistic basis. It's not one location and it's not one particular silver bullet," he said.
Options might include "adding capacity", making intersection improvements, or "relocating traffic" off congested streets, which meant relocating by public transport or walking or cycling.
He said the team would engage with the public in May over a shortlist of scenarios, and hoped to come up with a "preferred scenario" around the middle of the year.