On Sunday, 11 January 2026 14:56:52 Greenwich Mean Time Michael Tsang wrote: > Hi all, > > I am the lead developer of Aubin which is a public transport journey planner > using OpenTripPlanner as its backend. We have now released an update which > shows the position of the station entrances where you need to use during > your journey on the map. > > This feature has helped me a lot in finding errors in underground station > mappings, because if I expect to use an entrance to go underground but a > symbol doesn't appear, it strongly suggests that there is some mess up in > the map which makes me teleport between levels, or alternatively the > platforms aren't mapped properly with the right naptan:AtcoCode populated, > or the entrance themselves not being mapped, or the platforms aren't > correctly connected to the street network. I have already found and fixed > some errors in the map like Oxford Circus. > > I am not trying to promote the features of Aubin not directly related to > OpenStreetMap but you should try to use it because it uses OpenStreetMap > data to guide you directly to the best entrance to the correct platform, > giving a realistic time to access / change trains, as long as the map data > is of high quality. > > Also, I live in London, if you find some dodgy journey planner results > planning a trip in London but can't fix it yourself, please let me know > where the problem is and I may be able to have a site visit (I did some in > South East London yesterday). > > Thanks, > Michael
Further to the above, please also check that the app can correctly show the platform numbers for metro journeys. They can be shown in the app when all the following are present: - a `ref` on the platform - a `naptan:AtcoCode` on the platform - the platform is a member of the stop area If multiple platforms function as a group (for example, terminus platforms), tag them with the same `naptan:AtcoCode`, in such case we can show in the app in the format such as "Platform 3-6". Please help to complete these information in the map. Thanks, Michael
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