[Tagging] Feature Proposal - RFC - Validity of Route Relations

[Erkin Alp Güney]

They may open any time. It is sometimes associated with political
events. However, closures almost always happen on the start of the
timetable period.

Michael wrote:
> Unfortunately, sometimes timetables or operators change not only in
> December but also in June. New (railway) lines or stations are not
> always opened at the great timetable change in December. There are
> frequent cases when (smaller) stations are opened in the course of the year.
>
Yours, faithfully
Erkin Alp