Wear sunglasses. Be nice but try to not give away any emotion. Don't get into it. If they do manage to get in your face, tell them you are pregnant. Most of these guys are married with kids. Tys he women can be even more vile with the language. They are going to try to keep you off balance so that you cant finish a job.
Always walk around the truck before you get in to make sure that there is nothing that can flatten your tires and nothing in the tail pipe. If you see a bunch of red shirted people standing around the job, call it in that you are going to the next one.
If they know that they can upset you, they will. So keep a poker face, as hard as that may be. After a week or so it won't be as bad.
Good luck and stay safe.