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ATS Physics' Tweak (Slippery Surfaces)

SCS PHYSICS'
(NO snow/weather) For 1.35+; SCS made more improvements; examine Game Preference options to see them.
SLIPPERY SURFACES

This mod . . .
- provides WINTER tire traction (substantially reduced from SCS' default; tire choice & maintenance have more impact).
- changes shape of BRAKE-STRENGTH characteristics. I find it most helpful when "air brake simulation" is enabled because light pedal pressure is possible (good braking control without releasing air); slow-speed gradual braking requires more pedal pressure(1)
- increases cabin PITCHING (increases allowed forward & backward movement) and lengthens OSCILLATION (reduces damping) of trucks' cabins while accelerating and braking. (Default ROLL remains intact.)
- increases MASS of truck (independently of chassis mass). Cabin+Driver= 1200kgm (~2650lbm), wheel+tire=@127kgm(~280lbm)
- provides an AIR-SEAT ride (increased motion of cab camera (driver view)). Note: I like my seat to be agile :)

This mod includes only two files: 1) physics.sii, and 2) physics_interior_camera.sii.

ETS2 Dry-surface Physics mod:
https://steamcommunity.com/sharedfiles/filedetails/?id=1825630569
ETS2 Slippery-surface Physics mod:
https://steamcommunity.com/sharedfiles/filedetails/?id=1578705103
ATS Dry-surface Physics mod:
https://steamcommunity.com/sharedfiles/filedetails/?id=1814180686
ATS Slippery-surface Physics mod:
https://steamcommunity.com/sharedfiles/filedetails/?id=1580090090

===== credits =====
I learned about physics parameters values from . . .
1) studying mods written by AlexeyP and Frknm64.
2) reading this fabulous post by Cadde: https://forum.scssoft.com/viewtopic.php?t=189379 (it's outdated, but exceptionally informative)

(1) I use this mod with . . .
- a Trustmaster T300 wheel with T3PA Pro pedals (with DIY load-cell mod).
- Brake intensity slider slightly left of center in Gameplay Options