Rockport Transportation Authority.zip is a release file of the Minecraft resource pack Rockport Transportation Authority - IR, made for Minecraft 1.14.4, 1.16.5, 1.12.2. It was published on August 10, 2021 and is 41.2 MB in size. For the full description, screenshots and every other version, visit the Rockport Transportation Authority - IR resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.