Tweet

Andrew J

11 Oct, 4 tweets, 2 min read

@GoWhippet

What happened with @GoWhippet X3 due Cambourne 07:36 this morning? The tracking in myTrip (and via BODS) froze outside Papworth and wasn’t updating.

Bus WG_101 driver 2233377

Note time of screenshot (7:45) and location (10 mins after it should be in Cambourne)

@borofergie

You can see here that the GPS location (Lat/Lon in Yellow) just stops updating.

When this happens all predictions on VixConnect stop and passengers get the scheduled rather than predicted arrival times.

When the bus location freezes it also stops your myTrip app from showing the current bus location (as myTrip also uses the BODS real-time data).

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Andrew J

@AJ99500818

13 Oct

@GoWhippet

Interesting from a whole day of logging all the @GoWhippet X3 buses. As before the coloured bars are different drivers, the red are times when the location data is unchanged. White gaps are when no location data is uploaded.
@borofergie @CBGbusUsers @busopendata @CambsPboroCA

@CambsCC

Any white gap of more than 5 minutes results in @CambsCC's VixConnect giving up on predictions and switching to scheduled bus times.

Looking at the data there appear to be some common gaps. To check this I've turned all the graphics gray and superimposed them.

Read 8 tweets

Andrew J

@AJ99500818

12 Oct

@GoWhippet

I've created some new daily graphics to highlight BODS data uploads from the @GoWhippet X3 (I can do any bus in the UK). I'll show a full dataset tomorrow evening.

However in the meantime how on earth does this happen?

@borofergie @CBGbusUsers @busopendata #busopendata

In these graphics there is a bar each time BODS data is uploaded (colour coded by driver) and a red bar shows when the GPS location data is identical to the last one. Blank white space shows no data has been uploaded at all.

The blank gaps are as bad as frozen data as it shows uploads of location tracking has stopped.
Frozen location data (in red) will occasionally occur if the vehicle is absolutely stationary (eg at traffic lights or in traffic.)

Read 7 tweets

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