Looks amazing!

In general, it looks like AI driver just scared to go into the unknown 😆

Although it is written on the RnR-Wiki that in the release versions of the game, traffic begins to drive through the mines if you push the AI ​​car deeper.

It is possible that the path to the mines in the way file is of one type, and the road itself inside the mines is of a different type. Traffic approaches it, sees that it is prohibited from moving there, and turns around.

It looks very good!) If it’s not a secret, this works using bone animation?

I think so. And most importantly, the Gold Edition has 3 additional trucks that are not available in all other versions. But this is all about the edition from Cenega, because there are other "Gold editions" of this game.
There's some more information about this edition: rnr-wiki.ru/index.php?ti...

Even identical files with exactly the same content are encrypted differently in different R'n'R versions. ¯\_(ツ)_/¯

The simplest fix for many bugs would be to simply take the exe from later versions of the game and install it over the Steam version, but this will not work because almost all game configuration and localization files have encryption that is different for each specific version of the game.

By the way, as far as I remember, the Steam version is similar to the release one. It is almost unplayable due to low performance and various bugs. The DLC versions are noticeably more stable and run much faster. The main thing is not to visit new locations that these DLC add :)