Hi, well I believe that you get out what you put in. I am a professional and I try to hold myself in that manner. I sense harassment now and then and depending on the mood I'm in I will talk some major smack right back to them!
It usually will be all in fun but I have heard some guys just take it over the top. You have to know when to just ignore them and not feed into it.
I have seen female drivers get out of their trucks with boobs about to pop out of their shirt or cheeks showing out of the bottom of their shorts and all I can think is that their prior profession was LOT LIZARD! It is not only unprofessional but it opens the door for other kinds of trouble.
As far as being treated differently, I have experienced it. It is still hard for some to accept a woman in a traditionally man's profession. Overall I love what I do and for the most part there are way more professional drivers out there than there is riff raff.
I LOVE my job!