Trials and Data Correlations

Trials and Data Correlations

A few weeks ago I wrote about the Low Traffic Neighbourhood (commonly abbreviated to ‘LTN’) trial currently taking place in the Onehunga suburb of Tāmaki Makaurau Auckland.

My article generated quite a bit of feedback and the trial continues to draw a range of responses (see for example https://www.rnz.co.nz/national/programmes/checkpoint/audio/2018789702/onehunga-low-traffic-trial-sees-quiet-streets-but-some-loud-critics and https://www.nzherald.co.nz/nz/simon-wilson-suburban-streets-are-climate-action-streets/FOOILOQQSUGY27EM2PZ7DKFXPY/).

Data from the trial has now been released and highlights the importance of these trials - and the data generated through them - in helping to deliver the change that is needed to address the pressures of growth, the impacts of climate change and the wellbeing of our communities.

Three key data sets are being recorded through the trial: the speed of traffic within the LTN and on adjacent streets; the volume of traffic on this streets; and average travel times through the area. The speed and volume data gathered so far demonstrates that the LTN has successfully achieved its objectives: slower speeds and fewer vehicle movements through the LTN. In fact, the data shows that daily traffic movements through the LTN and on adjacent arterial routes have reduced by around 2000 vehicles per day.

No alt text provided for this image

In terms of travel times - a key point of contention from residents and respondents to the trial - the data shows that the increases in people’s travel times have not actually been that significant. The largest changes recorded were increases in travel time of between 3 and 5 minutes, both from the centre of the LTN to the nearby motorway and along one of the main roads bordering the LTN.

“...the level of congestion is largely consistent with that which has occurred prior to the installation of the LTN, and is not considered significant.”
[extract from Maungakiekie-Tāmaki Local Board Project Decision Report]

These data are critical to illustrating the benefits that these interventions are having on our streets, as well as the true scale of the impacts, rather than simply relying on anecdotes alone.

Without a doubt, as I wrote about in my original article, there are broader challenges for this LTN, and other similar projects. In particular, questions remain about how to communicate what these kinds of project are trying to achieve, how to engage the broader community in a way that helps them navigate through the necessary change, and how to create safer spaces for all voices to be heard. However, as noted in the decision report: “from a technical perspective the project has achieved its goal. Furthermore, less traffic, moving at slower speeds is highly likely to contribute to the project’s safety objectives.”

As I wrote in my last post and reiterate here again: change is hard and uncomfortable, but change is a constant that we can either embrace, or risk stagnation as the world around us moves on.

For more information on the data from the trial as well as the broader community feedback received, check out the report at the following link: https://infocouncil.aucklandcouncil.govt.nz/Open/2021/05/MT_20210511_AGN_10822_AT_EXTRA.PDF

No alt text provided for this image


Russell Baillie

Director Asset Services

3 年

Obviously nothing winds the car addicted defenders of status quo up more than then losing their perceived god given right to continue to dominate any potential alternative or more enlightened way of doing things. Yes, SOME people don't have options so do need their car. But not all. No, not everyone 'needs' their car EVERY day. 2 days a week using an alternative = a 40% reduction. Yes, eBikes (& good wet weather gear) can do your 15km commute very easily and normally quicker than cars can. Yes, we do need more public transport - so try voting for local politicians that actively support public transport. No, car drivers don't solely pay for roads. 50% of local roading funding comes from property rates - you know, the property rates that the bus riders and cyclists also pay.

Angela Turrall

Manager, Optimisation and Insights at Chorus NZ Limited

3 年

Mark Hill-Rennie?yes, a survey is currently underway with local business. It will be interesting to see the results. I have received feedback personally from two businesses and one independent contractor who works in the area. The businesses have suffers a loss, and the contracted has had to cut her work hours, losing $450+ a week. She is a medical professional who works with booked clientele and was repeatedly missing bookings repeatedly due to congestion, forcing her hand. She is lucky as she could do that, many others cannot as their employers are not so understanding. I’ve also been doing research on other LTAs internationally, most are now removed, and considered unlawful.? The problem is, we really don’t know what the problem *was. As we weren’t and still haven’t yet been consulted, it has never been clear. Things were already safe (according to the data there were no actual incidents within the LTN prior to the trial), and traffic flowed rather well. Now, we’re seeing what I described above. One resident put it nicely, that the only problem in the area is the one this created. Another made a good point in asking that the team please stop referring to local children being safer, that’s not the case. Yes, children in the LTN are, but most local children are outside the LTN and are now no longer allowed to walk by themselves or ride bikes etc. To me that’s not a good trade off.? My personal opinion as to why these fail is that idealism isn’t being balanced with the reality of the situation. Much of what we’ve had in terms of response has been to “get out of your cars”. In Onehunga, a relatively low socioeconomic area, we work where the work is. Being told to work local (which is a comment we got) is just not going to cut it.

Angela Turrall

Manager, Optimisation and Insights at Chorus NZ Limited

3 年

While I put together my content for Tuesday here’s some other interesting data, this time regarding the budget, details of which were provided in??the agenda for Tuesday.?The total budget of $580k awarded to this project was meant to cover the multiple stages of the Arthur/ Grey??project, and also the East View trial.?At this stage, $421k??has been used, yet it’s not progressed past stage one, with no changes, no visible extra spend, while East View has not been started. The project has requested another $300k to do this.?Note that when the community asked about budget to communicate the Have Your Say survey, we were told that there was no budget for this. So exactly where has this $421k gone?The community was also originally told there were no dependencies between the Onehunga and East View projects, only to see there is. In fact, it now seems if the Arthur / Grey trial fails the East Link trial cannot progress. It is poor management to hang a totally separate type of trial in a totally separate area, on the success of an LTA in Onehunga.? Just more food for thought.

Ken Choe ????

Auckland Print Specialist l CA l Ex Banker l Owner: Presentations Design & Print present.co.nz

3 年

Alec, it's ridiculous comparing traffic data during Apr21 when we have the 2-week school holidays and Anzac weekend, with Nov20. How scientific is that?

Angela Turrall

Manager, Optimisation and Insights at Chorus NZ Limited

3 年

As a change manager of with over 17 years’ experience, including in analytics and data collection, and having reviewed all the available data, I am very comfortable in stating that the data collection for this trial is seriously flawed. Many roads haven’t been measured at all, speed counters are in areas where a driver is naturally forced to slow down, and don’t show the extension of the congestion period (up over 400%)... the vast majority of 80% are against the trial, and most feel less safe since it started. LTN streets are dead except for a tiny handful, and not being used for the intended purpose. Meanwhile the surrounding streets are now landlocked by all the cars. People are switching from alternatives back to driving, and the vulnerable are less safe than ever. Crime is also on the increase within the LTN. Some of that’s in the data, some hasn’t even been measured despite them supposedly being the success criteria.? This isn’t an issue of change resistance, it’s an issue of a poorly run project with absolutely NO consultation with the affected people, (60 out of the whole community is not a representative sample). It has no real concept, no real purpose. It’s poorly thought out, and poorly managed from a financial point of view. The team are idealistic, with no respect for the community despite them having close ties through yourself and others. ? Its saddening to see the continued spin coming from the project team and their ties, and total lack of respect shown to the community. I look forward to being able to have my say this coming Tuesday and demonstrating what a true representation of impact to the community looks like.?

要查看或添加评论,请登录

Alec Tang的更多文章

  • The time is now... but is it enough?

    The time is now... but is it enough?

    So, after much anticipation, Ināia tonu nei – the time is now, the formal advice to Government on climate action in…

    5 条评论
  • A bridge, some bicycles and the benefit of time

    A bridge, some bicycles and the benefit of time

    It has been quite the week here in Aotearoa - actually it has been quite the few weeks, months even - for safe streets…

    3 条评论
  • Kua hua te marama / The moon is full

    Kua hua te marama / The moon is full

    Cycles of change define the world around us. They’re also inherent in the lives we lead.

    192 条评论
  • Low Traffic Neighbourhoods: repurposing and reimaging our public spaces

    Low Traffic Neighbourhoods: repurposing and reimaging our public spaces

    In recent weeks, work has started on the Arthur-Grey Low Traffic Area, one of the first pilot projects in Tāmaki…

    76 条评论
  • Le Pariversaire: A Turning Point for Tāmaki Makaurau?

    Le Pariversaire: A Turning Point for Tāmaki Makaurau?

    Cities consume over two-thirds of the world’s energy and account for more than 70% of global CO2 emissions, so have a…

    10 条评论
  • Climate Action in a COVID-19 World

    Climate Action in a COVID-19 World

    Just a couple of weeks ago, we were celebrating a unanimous decision to halve Auckland’s emissions in the next ten…

    37 条评论
  • Climate Action, Climate Leadership

    Climate Action, Climate Leadership

    Today (11 April 2017) was a pretty significant day for climate action and climate leadership in Auckland, New Zealand…

    17 条评论
  • New Zealand's Water Wake Up

    New Zealand's Water Wake Up

    22 March is World Water Day, an event that historically passes New Zealand by with little fanfare, save the efforts of…

    2 条评论
  • Transitioning to a Low Water Future: The Value of Value

    Transitioning to a Low Water Future: The Value of Value

    In previous posts, I've provided some high level thoughts on the increasing importance of shared water risks to modern…

    3 条评论
  • Three Words to Define Sustainability Thinking... And They're Not What You Think

    Three Words to Define Sustainability Thinking... And They're Not What You Think

    More often than not, three words are used to define what we (individuals, business and broader society) mean when we…

    9 条评论

社区洞察

其他会员也浏览了