Onehunga Still Best Performer


Onehunga’s new train service continues to be the shining light in rail performance stats.

In October, it clocked up 94.5% punctuality and 99.2% service delivery.

This was its first full month of service.

In the September stats, bearing in mind the service did not begin until September 19, its stats were 88.1% of services arriving within 5 minutes of their scheduled time, while sections near Onehunga were still on a go-slow as the servicee was run in.

Now if all services can get to the 90% stats, commuters will be happy with a reliable service.

Western Line was only 78% but there were works going on in parts to set up electrification. Eastern’s surprising 66% was also due to similar works going on, which saw speed restrictions along the Line.

Cancellations during the month:

  • Train breakdowns and faults resulted in 99 cancellations
  • Track and signaling problems resulted in 2 cancellations
  • Other issues resulted in 64 cancellations during the month

October got off to a bad start with, on October 1, services into and out of Britomart disrupted for about an hour while a suspected fault in the tunnel was investigated. While no fault was found following correct safety procedure meant delays to 77 services including 26 cancellations. Then a train breakdown on Tuesday 5th delayed 99 services including 11 cancellations.

We hear a lot about Wellington’s cancellations. How are they doing? Tranz Metro’s target is trains being 95% within 3 minutes of timetable.




  1. Matt L says:

    The western line doesn’t surprise me as it was quite bad with the new timetable although I don’t think the problem was the electrification but the 6 car sets. It seems the drivers have taken some time to get used to them which is semi understandably as they would handle differently.

  2. Louis says:

    The service level sounds good, this is great selling point to extend to the Airport!

  3. Matt says:

    Gotta say, the sooner they get the electrics the better. Caught the 18:45 Onehunga service home last night, and it was absolutely deafening. That has to be some kind of OSH issue for the staff who have to work on it.

  4. Ian says:

    Wished the Onehunga service was the same for the western line. I arrived at Britomart 15 minutes late today! This happened last week too.

  5. Erin says:

    I would be interested to look at the full details of the report that they used to create these stats. I have yet to be on a train that is on time in the last three weeks that I have been taking the train. I am going to start my own stats to compare to the advertised stats.

  6. Matt L says:

    Erin - I know that feeling, often it can be that just the services you are on are affected, normaly because they are at peak times and delays elsewhere flow on. The main thing though is that on time performance is counted as within 5 minutes of its schedule. For Onehunga that means it can take 20% longer than advertised and still be ‘on time’ where as for the services on the other lines just an extra 10 seconds at each stop can be enough to put a train out of its slot and make it late.

    The services that are ‘on time’ tend to be the off peak ones that don’t need long stops so have a higher average speed. A better way to judge perfromance would to be to look the number of passenger minutes trains are delayed. That would mean a peak train that is 2 minutes late is worse than an off peak train that is 5 minutes late as more are affected by it.


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