From:
Caleb Stone
To:
Sam Newbold; Rachel Wilcox; Aaron Lefebre; Simon Ross
Subject:
Re: OIA - Lewis T - Crash Analysis System (CAS) data integration
Date:
Tuesday, 24 February 2026 11:35:47 am
Attachments:
image001.png
I'm happy with that.
Kerry G rang me yesterday to discuss it.
1982
After talking to her, I looked back through my documentation. They had provided the
possible variables and datasets to include. Which we could have pulled together into a
proposed data collection for integration. However, it appears that, at the time, I was
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looking for reviews or confirmation from potential users before progressing. NZTA had
the contact details for the potential users at MoT, etc., and I had suggested that we talk
to them.
But, then, I think both agencies got distracted by higher priority work.
So, tbh, it was both agencies re-prioritising and not progressing the data collection.
Information
Our current process is slightly different and wouldn't have likely resulted in the same
pause.
I don't know if that information is material now. But I thought I would clear that up while
it's top of mind.
Official
the
Caleb
From: Sam Newbold <[email address]>
Sent: 24 February 2026 11:27 AM
To: Rachel Wilcox s 9(2)(a)
; Caleb Stone <s 9(2)(a)
under
Aaron Lefebre <s 9(2)(a)
; Simon Ross <s 9(2)(a)
Subject: RE: OIA - Lewis T - Crash Analysis System (CAS) data integration
Kia ora team
Attached is what NZTA came back with. Looks like they’ve come to the conclusion that the CAS
data they have in mind was just the initial discussions we already advised the requestor about –
so the comment looks to be resolved.
Released
They’ve suggested replacing one of our paragraphs with what I’ve highlighted. Looks ok to me in
that it is very clear it is over to NZTA to make the call in approaching us in getting CAS data into
the IDI. Can you please let me know your thoughts?
Cheers,
Sam
Sam Newbold (pronouns: he/him/his)
Senior Advisor – Executive and Government Relations, Office of the Government
Statistician and Chief Executive | Kaitohutohu Matua, Tari o Te Tumu Whakahaere
Stats NZ | Tatauranga Aotearoa | stats.govt.nz |
About Aotearoa, for Aotearoa
Data that improves lives today and for generations to come
1982
From: Rachel Wilcox <s 9(2)(a)
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Sent: Monday, 23 February 2026 11:15 am
To: Sam Newbold <s 9(2)(a)
; Caleb Stone
<s 9(2)(a)
; Aaron Lefebre <s 9(2)(a)
; Simon Ross
<s 9(2)(a)
Subject: RE: OIA - Lewis T - Crash Analysis System (CAS) data integration
Thanks Caleb
Information
Sam – happy for you to check this with NZTA before Simon is back tomorrow, if needed – I will
flag it with him tomorrow morning, but he’ll likely have a bit to catch up on so don’t want to
hold you up.
Also, feel free to add any further detail from Caleb’s email if you think it’d help here.
Official
Rachel
the
From: Sam Newbold <s 9(2)(a)
>
Sent: Monday, 23 February 2026 11:14 am
To: Caleb Stone <s 9(2)(a)
>; Rachel Wilcox <s 9(2)(a)
;
Aaron Lefebre <s 9(2)(a)
>; Simon Ross <s 9(2)(a)
Subject: RE: OIA - Lewis T - Crash Analysis System (CAS) data integration
under
Cheers Caleb
From: Caleb Stone <s 9(2)(a)
>
Sent: Monday, 23 February 2026 11:11 am
To: Rachel Wilcox <s 9(2)(a)
; Sam Newbold
<s 9(2)(a)
>; Aaron Lefebre <
Released
s 9(2)(a)
; Simon Ross
<s 9(2)(a)
>
Subject: Re: OIA - Lewis T - Crash Analysis System (CAS) data integration
Rachel is correct!
1982
Act
Information
Official
the
under
Released
Due next Thursday so would appreciate any comments by Tuesday please. I’ll also run this past
NZTA next week.
Happy to discuss.
Thanks,
Sam
1982
Sam Newbold (pronouns: he/him/his)
Senior Advisor – Executive and Government Relations, Office of the Government
Statistician and Chief Executive | Kaitohutohu Matua, Tari o Te Tumu WhakahaereAct
Stats NZ | Tatauranga Aotearoa | stats.govt.nz |
About Aotearoa, for Aotearoa
Data that improves lives today and for generations to come
From: Caleb Stone <s 9(2)(a)
Sent: Friday, 30 January 2026 8:58 am
To: Sam Newbold <s 9(2)(a)
; Rachel Wilcox
<
Information
s 9(2)(a)
; Aaron Lefebre <s 9(2)(a)
>; Simon Ross
<s 9(2)(a)
Subject: Re: OIA - Lewis T - Crash Analysis System (CAS) data integration
Ya'll got this!
Official
Caleb
From:
the
Sam Newbold s 9(2)(a)
Sent: 30 January 2026 8:29 AM
To: Rachel Wilcox <s 9(2)(a)
; Aaron Lefebre s 9(2)(a)
;
Simon Ross <s 9(2)(a)
>; Caleb Stone s 9(2)(a)
Subject: RE: OIA - Lewis T - Crash Analysis System (CAS) data integration
under
Thanks Rachael, agree that context you’ve provided will be important.
From: Rachel Wilcox <s 9(2)(a)
Sent: Friday, 30 January 2026 8:28 am
To: Aaron Lefebre <s 9(2)(a)
; Simon Ross
s 9(2)(a)
; Sam Newbold <s 9(2)(a)
>; Caleb Stone
Released
<s 9(2)(a)
>
Subject: RE: OIA - Lewis T - Crash Analysis System (CAS) data integration
Thanks Aaron – agree with you here.
I think most of the responses will be that the documents don’t exist – however we should be
careful to state/re-iterate that this is due to NZTA not prioritising the data being added to the
IDI, rather than our decision (and it reflecting badly on us not having done the work, or not
recording that we paused the work etc.
More broadly – I’m not sure if the requestor is looking for the data to be added to the IDI (and
therefore trying to understand why it hasn’t been progressed) or something else. If it’s the
former, we could encourage them to contact NZTA to recommend the data to be added. This
is more in the ‘trying to be helpful’ side of the OIA but it depends what context they are
1982
coming from
Rachel
Act
From: Aaron Lefebre <s 9(2)(a)
Sent: Friday, 30 January 2026 8:22 am
To: Simon Ross s 9(2)(a)
; Sam Newbold <s 9(2)(a)
;
Rachel Wilcox <s 9(2)(a)
>; Caleb Stone s 9(2)(a)
Subject: RE: OIA - Lewis T - Crash Analysis System (CAS) data integration
I’m a bit confused with this one..
Information
I’ve attached the email conversation from last year. Caleb provided the following:
At this point, it is almost solely because NZTA couldn't and haven't prioritised the effort
required to progress the collection and integration. We have only received a direct request
about the integration of this data by NZTA. Therefore, there isn't any reason why we would
Official
prioritise or chase it.
the
Given this, I suspect we don’t have any of the documents or info the requestor is after. This
wasn’t slowed or stopped, it never started.
@Caleb Stone – keen for your thoughts.
under
Ngā mihi,
Aaron Lefebre (pronouns: he/him/his)
Unit Manager – Integrated Data Production | Kaiwhakahaere Wāhanga - Whakanao
Raraunga Paihere
Stats NZ | Tatauranga Aotearoa | stats.govt.nz | Auckland office | s 9(2)(a)
Released
About Aotearoa, for Aotearoa
Data that improves lives today and for generations to come
Facebook | Twitter | LinkedIn
From: Simon Ross <s 9(2)(a)
Sent: Thursday, 29 January 2026 1:46 pm
To: Sam Newbold <s 9(2)(a)
; Rachel Wilcox <s 9(2)(a)
;
Aaron Lefebre < s 9(2)(a)
Cc: Caleb Stone s 9(2)(a)
Subject: RE: OIA - Lewis T - Crash Analysis System (CAS) data integration
Adding Caleb Stone to this in case he has any input.
1982
From: Sam Newbold <s 9(2)(a)
Sent: Thursday, 29 January 2026 9:56 am
Act
To: Rachel Wilcox <s 9(2)(a)
; Aaron Lefebre <s 9(2)(a)
Cc: Simon Ross s 9(2)(a)
Subject: OIA - Lewis T - Crash Analysis System (CAS) data integration
Kia ora team
We’ve received a follow up OIA request to the one you assisted me with last year. I’ve attached
the previous response that was sent to the requestor.
Information
Would you be best placed to advise whether the three documents the requestor refers to exist?
I’m guessing the
Latest Data Quality Assessment may exist, but the others may not? If they don’t
exist we’ll need to provide context as to why not.
Response is due to the requestor on 26 Feb 2026, would appreciate advice by Thursday 5 Feb
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please.
the
Dear Statistics New Zealand,
Thank you for your response of 8 December 2025 https://fyi.org.nz/request/32802-idi-crash-
data#incoming-135819.
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As you stated that no single document sets out the "reasons" for the pause in work on the Crash
Analysis System (CAS) data integration I am requesting the following:
The Latest Data Quality Assessment: The final version of any technical report, "Fit-for-Purpose"
analysis, or Data Quality Assessment (DQA) produced by Stats NZ regarding the CAS dataset prior
to the mid-2024 pause.
The Prioritisation Decision Paper: The specific internal briefing, memo, or ranking document
Released
provided to the Executive Leadership Team (ELT) in 2024 that identified the "competing priority
work" and recommended the suspension of the CAS data integration workstream.
The Official Project Pause/Exit Note: The formal Project Closure Report, "Pause" memorandum, or
the final Project Status Report (PSR) that officially recorded the decision to halt the integration
work in mid-2024.
I am requesting the latest existing versions of these specific artifacts to avoid the need for
substantial collation. If these documents do not exist, please confirm if the project was initiated
and paused without formal technical evaluation or project management documentation.
Yours faithfully,
Lewis T
1982
Thanks,
Sam
Act
Sam Newbold (pronouns: he/him/his)
Senior Advisor – Executive and Government Relations, Office of the Government
Statistician and Chief Executive | Kaitohutohu Matua, Tari o Te Tumu Whakahaere
Stats NZ | Tatauranga Aotearoa | stats.govt.nz |
About Aotearoa, for Aotearoa
Data that improves lives today and for generations to come
Information
Official
the
under
Released
