Interstate traffic does not yeild to merging traffic from on ramps in every state I have lived it. Yet so many drivers insist on braking and yeilding. It seems that simple concepts are the hardest to grasp. Is it more polite to yeild to one person or to not back-up traffic for hundreds? A man said to the universe: "Sir I exist!" "However," replied the Universe, "The fact has not created in me A sense of obligation." -- Stephen Crane