The 1.40 update for American Truck Simulator (ATS) is a landmark release that fundamentally changes the game's atmosphere. Released in early 2021, it moved the simulator toward a more modern, physically based rendering model that breathes new life into the open road. The "Glow Up": New Visual Lighting System The crown jewel of V1.40 is the New Visual Lighting System
Western Star 49X: Significant expansion including new cabin types (Day Cab, sleeper options) and set-back axle configurations. American Truck Simulator V1.40 Download
: Added 4x2, 8x4, and 8x6 chassis types for various trucks, including the Freightliner Cascadia, Mack Anthem, and Kenworth W900. Western Star 49X Update : Added 4x2, 8x4, and 8x6 chassis types
2. For Demo Users: The V1.40 update applies to the free demo as well. Simply search for "American Truck Simulator Demo" on Steam to download the updated version and experience the new lighting system in the base states. Simply search for "American Truck Simulator Demo" on
Pro Tip: Before performing the American Truck Simulator V1.40 download, go into your Documents/American Truck Simulator/mod folder and disable all graphics mods.
: A comprehensive update to road signage was implemented across states like Washington, Utah, and Idaho to improve navigational realism. 4. Implementation and Downloads