USA Standard Track 1.1 is a release file of the Minecraft resource pack USA Standard Track for Immersive Railroading, made for Minecraft 1.12.1, 1.12, 1.10.2, 1.11, 1.10, 1.10.1, 1.11.1, 1.11.2, 1.12.2. It was published on May 11, 2019 and is 7.8 MB in size. For the full description, screenshots and every other version, visit the USA Standard Track for Immersive Railroading resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.