[I]f the other lanes are too slow, I will pass on the left. This sounds like correct behavior, passing on the left. What I am reacting to (as are others, I bel

[I]f the other lanes are too slow, I will pass on the left. This sounds like correct behavior, passing on the left. What I am reacting to (as are others, I believe) is a desire to maintain a constant speed in the left lane, impeding faster-moving traffic from passing you on the left. Indeed, I feel unsafe when someone is tailgating. However, I find their behavior is often unpredictable and they might try to pass on my right at any moment without signaling. They will not pass on the right if you move right before they get close enough tailgate.