For PS4 controllers, make sure you uninstall or disable DS4Windows if you have it installed, otherwise it will conflict! If you want to get your vehicle back to the local garage, or the nearest one you have discovered if you’re on a garage-less part of SnowRunner, you can press up then recover.
To install, Simply extract the zip file into Documents\My Games\Rigs of Rods\config, overwriting when prompted.