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Most people know these rules however very few will obey the left lane rule. The fact of the matter is that the left lane is for passing only. Your speed is irrelevant! You should only be in the left lane long enough to pass the car to your right. If you chose to go the same speed as the vehicle to your right then you are wrong and you need to move into the right lane.
Another one that I am surprised is not mentioned is that you should ALWAYS enter at the speed of traffic. A motorist entering the highway at 45 MPH thinks they are being safe but the reality of it is that they are creating several potential dangerous situations for the rest of the people on the road as they are scrambling to avoid hitting this person.