As explained in the issue #138 on Jan 29th 2019, we drafted a GTFS-Translations proposal (bit.ly/gtfs-translations), which is based on Google's old private GTFS translation extension.

Since then, and after a few modification of the proposal (see the Google doc), Google has shifted to use it internally, deprecating their old private GTFS translation extension, as described in their documentation (here).

But there is currently no publicly available dataset using this extension, which prevents the opening of a vote for its adoption.

=> Does any of you know any GTFS producer which would be interested to have a translated dataset? Maybe in multilingual country (e.g. Belgium, Luxembourg, Switzerland). Thanks!