Box Trailer Enhanced (PolyFir): an improved SCS dry van for American Truck Simulator
PolyFir upgrades the stock ATS dry van with highly detailed models, realistic accessories and working work lights. Final release, tested on 1.57; over 1 GB.
Download Box Trailer Enhanced (PolyFir): an improved SCS dry van
Official screenshots by the author: Ā© šThomas | PolyFir on Steam WorkshopMore screenshots on Steam Workshop ā
What this mod does
Box Trailer Enhanced is a mod by Thomas, of PolyFir, that improves American Truck Simulator’s stock dry van trailer and adds accessories to it. It aims for realism: the author says it doesn’t include any made-up customization. It has over 35,000 subscribers.
What’s included
- Partly remade SCS dry van models, plus parts the author modeled from scratch.
- Realistic trailer accessories.
- Working work lights: they turn on with the same key as the beacons.
- Trailer skins keep working as usual.
Performance
It’s a heavy mod, just over 1 GB, with highly detailed models. The author warns it may cause problems on PCs that only meet the minimum requirements.
Version and status
This is the final release: the author says the project is finished and won’t get any more updates. He tested it on 1.57 and the latest update is from December 20, 2025. He didn’t test it with other mods, so it may conflict with them, and he warns it isn’t designed for the game’s economy system. In the comments, several users say it doesn’t work for them on 1.60 or crashes the game.
It’s free, only published on Steam Workshop, and the author forbids using his models in other mods.
Holyfix Check
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It's in Documents āŗ American Truck Simulator āŗ game.log.txt. It's read in your browser: the file is never uploaded.
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User rating
Our rating
0.0 / 5- A much more detailed dry van
- Working work lights
- Realistic accessories, nothing made up
- Latest game version confirmed by the author: 1.57. It may cause errors on 1.61; Holyfix will warn you if so.
- The author won't update it anymore
- It's over 1 GB and may run poorly on modest PCs
- Several users say it doesn't work or crashes the game on 1.60
- It isn't designed for the game's economy system
Requirements
- American Truck Simulator (the author tested it on 1.57)
- Steam account to subscribe on the Workshop
- No DLC or other mods required
- A PC above the minimum requirements
How to install it
- Open the āBox Trailer Enhanced | Final Releaseā page on Steam Workshop and click āSubscribeā.
- Launch American Truck Simulator and wait for Steam to finish the download.
- Open your profile's Mod Manager and enable the mod.
- Hitch an SCS dry van and turn on the work lights with the beacon key.
Common problems
How do I turn on the work lights?
With the same key as the beacons.
Will it be updated?
No: the author says the project is finished.
Do trailer skins work?
Yes, the author says they aren't affected.
More mods for ATS
ATS 1.59 
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ATS 1.58 
ā ATS 1.61 
ATS 1.58