"Sounds in a cabin and outside" v8.0
1 increase the volume in the cabin (engines, gear changes, retarder, etc.).
2 Change the volume of the turn signals and windshield wipers.
3 Moderately increased traffic volume in the cockpit.
4 Replaced sounds yawning drivers become quieter.
5 Replaced by the sound of rain and thunderstorms with thunder.
6 Replaced sounds of the brakes, lifting axle.
7 Added sound from venting the pressure regulator valve.
8 Changed the sound of the retarder.
9 Changed the sound of the turbine (some tractors).
Important:
It is desirable to put the events at the end of the list, or because of other mods may lose volume in the cabin and the volume of traffic in the cockpit.
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