In the Vinony graph
It is catalogued under the topic Modules for general use.
Vinony links it to 35 Wikipedia language editions.
~3 min read
Encyclopedic overview
Module documentation
This modules exports the filenames for extra road signs. For each road sign, a table is exported with a default value and country overrides, which can also then contain state overrides.
Excerpted from Wikipedia’s “Module:Road data/extra” article, available under the CC BY-SA 4.0 licence.