7
I would stick to the OSM design as close as possible. It works pretty well accross most zoom levels.
I use #787878 for the base colour. Width 1mm. For the dashed line on top I use white as colour. Width 0.6mm. Cap style Square. Custom Dash 1.5mm (Space 3).
5
I'm not sure these sources have exactly what you are looking for, but they may be good sources:
Ordnance Survey Open Data website.
TFL Open Data API includes "Routes and lines (topology and geographical)"
GTFS Data Exchange has information on a large number of rail agencies.
3
Check OpenStreetMap.
They might have what you're looking for and you can use Overpass Turbo, Planet OSM, Geofabrik to download shapefiles or whatever format you need.
2
A search on data.gov.uk for rail returns several datasets that you might find useful.
For example Network Rail - railway network Inspire data
There's a WFS and a WMS for the rail network and for stations
Here's a preview
2
I am just going to expand on my answer above.
You can use the list to reference what exists and how it is structured What Rail Station Code Should I Enter? In there you will see examples of "GBQQS"
London St Pancras International (GBQQS) GB GBQQS
as well as snippets of
DÃœSSELDORF FLUGHAFEN (DUS) (DE@DF) DE DE@DF
give that it can be queried I can ...
1
You can use viaEdges version of TRSP: https://docs.pgrouting.org/latest/en/pgr_trsp.html#support-for-vias
To find fractional positions on edges you can use ST_LineLocatePoint from PostGIS.
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