Dereks boxcabs for IR.zip is a release file of the Minecraft resource pack Derek's boxcab's for Immersive Railroading, made for Minecraft 1.14.4, 1.12.2. It was published on June 24, 2020 and is 10.9 MB in size. For the full description, screenshots and every other version, visit the Derek's boxcab's 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.