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Train punctuality weighted for impact on passengers

Michael Brown made this Official Information request to Wellington Regional Council

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From: Michael Brown

Dear Wellington Regional Council,

Metlink currently provides information about punctuality on the train network in this form on its website : "The rail punctuality measure records the percentage of services arriving at key interchange stations and final destination within five minutes of the scheduled time" (https://www.metlink.org.nz/our-metlink-b...).

However, recording the percentage of services which are punctual - and by implication, late - gives an ambiguous picture on how lateness is actually impacting upon the passenger base. A better way of measuring this impact would be to weight the punctuality data using the number of passengers on particular services. Thus, if a train is late during an off-peak trip, when passenger numbers are likely to be low, the impact is relatively small. But if a train is late on a peak service, then the impact is much greater. If such a weighted analysis was made of all late services, then a clearer overall picture of the impact of lateness would emerge than what is suggested by the information currently provided to the public (e.g. 88.4% of services were on time on HVL during November 2019).

Here are my requests for information:

1. Does the WRC/Metlink already perform any weighted analyses of train punctuality in the way - more or less - described above?

2. If so, please provide a summary of what information and reports it holds.

3. If not, can you please advise if you would be able to undertake this analysis using the data you already hold (i.e. for every service, both passenger numbers and punctuality data) for the purpose of this OIA. As I realise this might take some time, only a sample experiment would be necessary: services on the Hutt Valley Line for November 2019.

4. If you do hold the data, but are unable to accommodate my request, could you please supply the raw data for all services on the Hutt Valley Line for November 2019, as well as information on how the data is gathered. It would be most useful if the data was in the form of an Excel spreadsheet.

Yours faithfully,

Michael Brown

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From: Darrell Young
Wellington Regional Council

Dear Michael,

 

Acknowledgement of Request for Information under the Local Government
Official Information and Meetings Act 1987

 

Thank you for your email dated 1 March 2020, requesting information
regarding train punctuality weighted for impact on passengers.

 

Your request is being followed-up and a reply will be sent to you within
20 working days of the request being received.

 

Yours sincerely,

 

Darrell Young

 

 

for

Luke Troy

General
Manager                                                                                  

Strategy

Greater Wellington Regional Council

 

 

 

ATTENTION: This correspondence is confidential and intended for the named
recipient(s) only. If you are not the named recipient and receive this
correspondence in error, you must not copy, distribute or take any action
in reliance on it and you should delete it from your system and notify the
sender immediately. Unless otherwise stated, any views or opinions
expressed are solely those of the author, and do not represent those of
the organisation.

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From: Daniela Theodorou
Wellington Regional Council


Attachment Response to OIA 2020 036 Michael Brown.pdf.pdf
120K Download View as HTML

Attachment Attachment 1 to OIA 2020 036 Michael Brown HVL November 2019.xlsx
158K Download View as HTML


Dear Mr Brown

 

I hope my email finds you and your family well.

 

Please see attached the response to OIA 2020-036.

 

Thank you.

 

Yours sincerely

 

Daniela Theodorou |

Kaiāwhina Matua ki te Kaiwhakahaere Matua Waka

Executive Assistant to General Manager Public Transport  
GREATER WELLINGTON REGIONAL COUNCIL
Te Pane Matua Taiao
Level 2, 15 Walter Street,Te Aro, Wellington 6011

PO Box 11646, Manners St, Wellington 6142
T: 04 830 4309 | M: +64 277 599 670

[1]www.gw.govt.nz | [2]www.metlink.org.nz

 

ATTENTION: This correspondence is confidential and intended for the named
recipient(s) only. If you are not the named recipient and receive this
correspondence in error, you must not copy, distribute or take any action
in reliance on it and you should delete it from your system and notify the
sender immediately. Unless otherwise stated, any views or opinions
expressed are solely those of the author, and do not represent those of
the organisation.

References

Visible links
1. http://www.gw.govt.nz/
2. http://www.metlink.org.nz/

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