
Renderer Changes - (still based on DirectX 11 API for now)
We're consistently working on improving our rendering system. It's been a key focus for us lately, and although it's a project for the long run, we already have some new content available for you. So in version 1.50, we are introducing these highly requested improvements to the graphics of our games:- TAA, or Temporal Anti-Aliasing, which sets itself apart from other anti-aliasing techniques that aim to smooth images to reduce jagged edges or flickering through higher resolution rendering. Instead, TAA harnesses the timeline, particularly previous frames, to calculate color values as if from a higher resolution, providing a smoother result.
- Cascaded shadow changes: Smooth transition when blending between cascades, smoother and better-stabilized shadow edges.
- Soft particles: Particles and light flares smoothly fade out when near geometry, eliminating harsh intersections for a more seamless visual experience.
- Lit/shadowed smoke: Smoke particles with enhanced volume perception and shading from sunlight, providing a more realistic and immersive atmosphere.
- Far shadows: Ever-present shadows from distant large objects like factory halls, skyscrapers, and road overpasses, with the option to toggle them off in the Options menu.
- Optimized light computation: Dynamic lights are evaluated in a single pass, known as clustered lighting, improving performance in night scenes.





















User Interface Rework
We are introducing substantial UI updates to enhance player interaction and accommodate more features. The redesign adopts a flatter, minimalistic design with tooltips and layered navigation, ensuring easier accessibility. For most UI screens, the visible changes are just an evolution of the previous look, though functionally, a lot of work was invested into making them work more comfortably with a gamepad or a steering wheel, requiring less time reaching for a keyboard.




California Rework - Phase 3
The third phase of the California rework makes its debut in the 1.50 update for American Truck Simulator, with a primary focus on central California. This region encompasses key cities starting from the north, such as San Francisco, Oakland, and Stockton, and extends southward to Santa Maria and Bakersfield, although the latter two are not included in this rework phase.



International LT S13 & International LoneStar
With the 1.50 version, the International LT receives revamped interior and exterior options, and the LoneStar gets a refreshed interior. The International LT's exterior sees significant enhancements with new features, customizable options, and adjustments to existing parts, including the addition of the S13 model with its Integrated Powertrain. Additional accessories such as new chassis fairing extenders, bumper and grille options, FlowBelow fairings, blindspot detectors, and a shorter day cab chassis have been introduced.












Options Tooltips
Placing your mouse over each setting option will display helpful information, including explanations of what the options do. You will now effortlessly grasp the purpose of every adjustable option in the settings, enabling you to easily fine-tune your experience.
Lane Assistant
After implementing various driver assistance features, developing a lane assistant was the next step for us. This system features different modes that make it work well with various ways people control their vehicles, including steering wheels with force feedback. Now, truck drivers can enjoy simply turning it on along with adaptive cruise control, and letting the truck do more of the driving.
Western Star 49X - New Exhausts
The Western Star 49X now boasts an exclusive edition featuring specially crafted official exhaust systems for both the daycab and sleeper variants. Elevating its premium status, these exhaust shields are intricately engraved with striking Western Star lettering, ensuring your truck makes a bold statement on the road.

Changelog
Map- California Rework – Phase 3
- International LT S13
- International LoneStar (interior) and LT (exterior & interior) rework
- Lane assistant feature added
- New exhausts added for Western Star 49X
- Substantial UI design update (Home screen redesign, persistent Status Bar, Quick Menu, new fonts, icons and more)
- Settings options show information about what they do
- Improvements in the rendering system
- Temporal Anti-Aliasing feature added
- Cascaded shadow updates
- Soft particles
- Lit/shadowed smoke
- Far shadows
- Optimized light computation
- Frame rate limiter added
- Brake squeaking sounds added