[OSM-talk] Ways in tunnels

[David Groom]

Is there a consenus / best practice on how to tag ways which run through 
tunnels?

Lets assume a rail line (A-D) which runs through a tunnel (B-C)

A_____________B   __   __  __  __  __ C________D

There seem various ways of tagging this:


1)  Way A-D tagged as railway = rail; and segments B-C tagged as tunnel=yes

2)  Way A-B   C-D tagged as railway =rail.; and way B-C tagged as railway = 
rail, tunnel =yes

3)  Way A-D tagged as railway = rail; and way B-C tagged as railway = rail 
tunnel=yes


David