Just real crude routing using the existing roadways where possible. No detailing, because without unearthing the tracks I can't be sure where exactly they curved, so I used road relations where possible, only deviating when the road is divided or the road is no longer existing (i.e. Buckingham St.)

None of this should detract from the basemap or user experience, this is simply for people being able to find where exposed rails might be found by querying the map, and for railway information sites (like openrailwaymap) which use these ways to document abandoned urban streetcar networks.