How do I deal with trucking companies or their insurance carriers after a truck accident?

The best advice is NOT to deal with them! The first thing you should do is contact an expert truck accident lawyer. The last thing you want to do is your own negotiation with a trucking company about your semi truck accident or semi rig injury. Most trucking companies are highly skilled at semi truck accident investigation and claims. Anything you say or sign may be held against you further down the road.