Abandoned railway - how to code for cycle track?

Thanks for all replies. I also had no idea abandoned railways could be so controversial!

Also useful to learn a few noob things on the way, like the distinction between the database and the map.

I hope my solution suits everybody tolerably well - anyone interested can go and have a look.

Looks good to me:

https://map.atownsend.org.uk/maps/map/map.html#zoom=15&lat=52.75115&lon=-0.38766

(shameless plug - that’s a site I maintain).

You can see which bit of the old railway is now a public footpath and which bit isn’t.