The trailers are not provided. You can buy them from other creators. I will try to get a list of some of the creators together at some point. Some of the trailers in the base game are already configured to work such as the ‘tr2’, ‘cartrailer’, and ‘trailers3’. You can also add your own to it as well.
Update (v1.0.1):
Added a new client side function CanVehicleBeAttachedToTrailer that will be checked when a player tries to attach a vehicle to a trailer. You can use this to further restrict or control when a player can attach a vehicle to a trailer
Also incorporated a new export that’s been added to the trucking job into the new “CanVehicleBeAttachedToTrailer” function. This will prevent players from attaching their loaders to trailers while on an active job since that job has its own trailer attach mechanics
Right now it doesn’t support flatbeds/trailers with no ramps but it wouldn’t be difficult to support. I am willing to explore the option to support it if there’s demand for it
this could be really nice and it would make the script complete and avoid the need for another script on the side for flatbed type vehicles which do not have a ramp
Added support for static trailers that have no ramps or doors. You can also mix and match for trailers that may have unreachable locations where you would like to store a car
Added static trailer helpers that can be enabled/disabled to help players load vehicles onto a static trailer.
Added support for inside-interaction and no targeting system (will use the classic GTA help message)
Reworked the static trailer attaching. Upon loading it will re-adjust the position of vehicles to prevent mounting the vehicle on top of another. Preview Clip