Every weekend we dig into the archives. This post by Matt was originally published in June 2016.
Yesterday, the second Auckland Transport Alignment Project (ATAP) report was released, with the third and final report due in August. ATAP is the council and government working together to come up with an agreed transport plan for Auckland, one that ultimately performs better than what is currently planned.
The first Foundation Report was about agreeing on the assumptions they would use (such as land use, growth rates etc), and looked at how the currently planned transport projects would perform in the future based on these assumptions. There was a lot of interesting information, but ultimately the report found that by 2046 the outcomes weren’t great, and highlighted that we need to improve our plans or face even greater congestion.
Now we have the Interim Report (2.1MB), which explains the outcomes and thinking so far from the work to look at how our transport plans could be better. The work so far includes looking at a range of transport interventions to see how what impact they have.
So far the media have focused on one very specific outcome of this interim report – road pricing – but there are a lot of other important points that needs to be covered. Perhaps more than anything, the important thing from ATAP so far is that it hints at thr old business saying of ‘joined up thinking’. That’s because it doesn’t just take a “build more stuff” approach, but looks at a mix of building stuff and also managing demand. So let’s go through what I thought were some of the key and interesting points found in the Interim Report.
While the purpose of ATAP is to come up with a better and aligned transport plan, it’s also important to consider how much that might cost. To that end, the ATAP team have taken a stab at how much money might be available to spend in the future. Investment in transport in Auckland has been much higher over the last decade, as the city has gone into catch-up mode, however they’ve projected that level of investment forward based on a couple of options. Continuing the current investment:
- as a share of Auckland’s projected GDP – currently estimated at over 2.5%
- on the same per capita basis.
Because productivity is expected to improve over time, the share of GDP measure results in a lot more transport spending and over a 30-year period results in total difference of around $23 billion. The two approaches are shown below, with the current expected spending also shown as far as is currently budgeted (10 years). The lump in current investment is the result of a heap of big projects on the books including CRL, East-West link, Puhoi to Warkworth etc.
Testing Alternative Packages
ATAP have tested alternative scenarios and condensed these down to two packages as shown below.
These have then been modelled, to see how they perform relative to the Auckland Plan Transport Network from the Foundation Report. The outcome isn’t great, and they say that while there can be some improvements made in some areas, they are not to the level that would be needed to make a material difference. The colours on the graphs match the colours above.
The graphs above are at a regional level, but at a sub-regional level, things can be quite different. The Foundation Report highlighted big issues with accessibility from the South and West.
The big improvement in the Northwest for PT is the result of building the Northwest Busway, highlighting once again just how stupid it is that the NZTA aren’t building it right now as part of their motorway widening.
The report also gives a lot of backing to Auckland Transport’s plans for light rail – although without actually mentioning it. It talks about how a number of bus corridors to the city centre (North Shore, Northwest and Isthmus) will be subject to significant capacity issues unless something is done. The example given is of Symonds St showing that by 2045 it is well over capacity.
The Additional Waitemata Harbour Crossing gets a specific mention too, which is unsurprising because as currently planned, it’s by far the single biggest transport project ever planned in New Zealand. What is surprising, though, is that ATAP seems to pour a bit of cold water on the road-building side, saying that it doesn’t improve congestion and seeming to suggest that perhaps a PT-only crossing might be more appropriate.
Improving access to and from the North Shore
- The bridge and its approaches are a pinch-point on the transport network, particularly during the evening peak in both directions.
- An additional crossing significantly improves accessibility to/from the North Shore, but does not appear to substantially improve congestion results.
- Projected growth in public transport demand appears likely to trigger the need for a new crossing within the next 30 years. There is potential for a shared road/PT crossing, but the costs and benefits of different options require further analysis.
High cost of potential solutions
- Because any new crossing will be tunnelled, there is a significant opportunity cost arising from this investment. Fully understanding key drivers, alternatives, cost and benefits will be crucial before any investment decisions are made.
- It makes sense to protect the route for a new harbour crossing in a way that integrates potential future roading and public transport requirements.
The congestion issue is highlighted in these results, showing it is just as bad or actually worse.
New opportunities represent some of the potential changes that could be made to the system but which are not currently in plans. It’s possible that they might not all become reality, but they were included in a bid to see what impact they could potentially have.
Part of ATAP’s terms of reference was to look at the impact of road pricing as a demand management tool. While the media have picked this up as “motorway tolling”, the outcome ATAP is talking about is quite a different beast. In essence motorway tolling was about raising as much money as possible and trying to do that efficiently. Road pricing for demand management is primarily about trying to get more efficient use of the road resource we have. ATAP is talking about pricing roads regardless of whether they are motorways or local roads, across the entire region i.e. a network-wide solution.
Their hypothetical solution looked at having varying charges between 3c and 40c per kilometre depending on time of day, location and the type of network the travel occurs within. As a comparison, a rough estimate suggests current fuel taxes are about 6c per kilometre now. An example of how the pricing could differ is shown below.
This would still need some infrastructure investment, particularly on PT to give people options and these were included into a fourth package for modelling. As you can see, this fourth package (in blue below) performs significantly better than the other packages above when it comes to congestion.
This initial work suggests that the package of ‘road pricing plus extra public transport investment’ makes a massive difference, for both congestion and accessibility as shown in the two images above. ATAP says more work is needed to determine the exact impact, but it seems that road pricing is likely to have a major role in Auckland in the future. This has also now been confirmed by Simon Bridges, whose predecessors were very negative about earlier tolling ideas. This is a significant change and a welcome one.
In addition, ATAP also considered the impacts of technology, such as higher occupancy vehicles, most likely through ride-sharing and connected vehicles. They say the results are encouraging but also warn they likely reflect a best case scenario. Furthermore, as they don’t include any potential impact on overall travel demand (which could be significant), those savings could disappear.
Emerging strategic approach
ATAP say they asked the question of Should we build more or should we address demand? Ultimately, they suggest the outcome is likely going to be a mix of infrastructure and demand management. They highlight that there are likely diminishing returns on infrastructure, since it is increasingly expensive to provide to the existing urban area, so building our way out isn’t an option. This is an issue being faced all over the world.
All of the work above leads to the high level strategy ATAP will take – which is not all that different to what we’ve seen suggested before in various documents.
Overall, ATAP seems to be on the right track with the approach they’re taking. With the government, the council and all of the relevant agencies working together, it’s likely we’ll end up with a lot more agreement on transport in Auckland than we’ve had in the past. Have you read the document, if so what are your thoughts?