driving rules

Back home we, of course, have have a lot of rules for driving, but there are only two main ones:
1) yield to the traffic on your right side
2) give the way to the fool (jerk, bustard... whatever).
Driving around the States I've realized that there is one more rule to these two:
Be extremely careful with trucks. Some truck drivers act as if you are not even there. I understand that they have a bigger blind spot, but they are acting rude even when they can clearly see you!
I think we don't have this problem with trucks, because the majority of goods is transfered by trains.