The Ministry of Transport has released a detailed and interesting look into some of the results coming out of the 2013 Census Journey to Work question. Both the executive summary and the full report are worth a read. As we’ve noted before, the 2013 census results confirm a shift in the way Aucklanders are travelling, with much stronger growth in public transport than in driving (especially in percentage terms). Interestingly, even within people travelling to work via private vehicle, there is a big difference between those who drove themselves (which increased and roughly maintained its modeshare) and those who were passengers (which declined fairly dramatically). This is shown in the graph below:
I’m struggling a bit to explain why private vehicle passengers has declined to significantly – perhaps they are the ones who are shifting mode to public transport to a greater extent than drivers?
The report compares Auckland’s mode-splits with a number of Australian cities, highlighting quite an interesting trend that although our public transport use is generally lower than those cities, our active transport modeshare is often higher:
Quite a lot of the report is analysis of different parts of Auckland, comparing travel patterns and modes for the CBD, CBD fringe area (called other central), inner urban (isthmus and lower North Shore), outer urban and rural areas. The graph below is a fairly nifty way of representing the overall share of Auckland’s trips that start and end in these different areas:
The Outer Urban area is reasonably “self-contained” in its trips, with a very large share of trips originating in Outer Urban areas also being destined for those areas. The CBD is a strong destination for Inner Urban areas, along with employment in other parts of those Inner Urban locations.
Looking closer at the CBD, the report analyses where people who work there are coming from, showing a strong focus on the isthmus and the lower North Shore – the “Inner Urban” areas highlighted above:
It is worth noting the difference between the west and the south in the map above – both areas reasonably equidistant from the city centre, but with the south having much more local employment and therefore much less of an employment connection with the CBD. One would expect, post City Rail Link, for the west to be even more strongly connected and also for the south to begin to benefit from improved city centre access and the employment opportunities that will provide.
Another interesting part of the report is the comparison between different local board areas, which unsurprisingly show some pretty dramatically different modal splits:
Waitemata Local Board obviously stands out from the rest, with a private vehicle modeshare of below 50% and a very high proportion of people walking or cycling to work. Clearly Waitemata benefits from having so many jobs located within the local board area, as well as the increasing number of people who live in the city centre unsurprisingly having a very high ‘walk to work’ share. Another point of interest is how work from home varies by Local Board – higher in rural and richer areas and very low in parts of South Auckland. I guess this reflects most ‘work from home’ jobs being either rural in nature or well-paid professional work.
One of the clearest patterns highlighted in the report is the relationship between residential location and trip length, with journeys to work getting longer and longer as you live further away from the city centre – even though only a relatively small proportion of Auckland’s jobs are actually located in the city centre:
This finding is unsurprising and a core part of why urban sprawl concerns us so much, because people living in far flung parts of Auckland need to travel a very long way to work – which is both expensive and places a lot of pressure on the transport network. It’s also clear that West Aucklanders are stuck with long commutes more so than most other parts of the city – highlighting once again the huge benefit City Rail Link will bring to the west as well as the need to increase the level of employment available in that part of Auckland.
Flipping the above map around, to instead focus on length of journey by destination reveals a much less clear pattern and some interesting anomalies – people who work at the airport have to travel a very long way to get there (rail to the airport will be very useful for them!) while people who work in the Howick/Botany area seem to have very short commutes, maybe highlighting the extent to which that area is disconnected and isolated from the rest of Auckland (only people who live in the area are prepared to work there):
Looking at private vehicle modeshare by point of origin highlights clearly the more and less car dependent parts of Auckland. The inner areas are doing pretty well here while the northwest and the southeast (in particular) are the most car dependent parts of Auckland. Hopefully the AMETI and Northwest busways will change this in the future:
Bus modeshare is highest on the North Shore and the Central Isthmus – reflecting locations where high quality bus service and infrastructure is available:
For rail, a key analysis relates to the question of “for trips heading to the CBD from a particular area, what proportion of those trips are carried by train”. The south does pretty well in this respect, reflecting that it’s a pretty long car journey from Papakura or Pukekohe right through into town:
Looking at the above map it’s quite telling to see how along the inner parts of the Western Line, rail is capturing a pretty low proportion of CBD-bound trips – I imagine due to the very long an convoluted path the train takes via Newmarket. With the City Rail Link in place there’s some huge growth potential in these areas for much higher levels of train use as there’s a pretty huge untapped market at the moment.
Looking at overall public transport modeshare, the dominance of the isthmus is quite clear. This is a large reason why we were so frustrated to see intensification on the isthmus watered down in the Unitary Plan to such a great extent last year.
There are a myriad of other fascinating maps and graphs within the report, but they can wait for a future post. Perhaps commenters might have a think about what they think might be behind a few of the results above – particularly:
- Why might private vehicle passenger trips have decreased so significantly compared to all other modes of getting to work?
- What impact might CRL, Airport Rail, AMETI and other major projects have on these patterns over the coming decades?
- What’s up with Stonefields? – its travel patterns are much more like an ex-urban piece of sprawl than a fairly dense inner-urban suburb.