Through Tuesday, Kansas drivers could hog the left lane of multilane highways and risk only a honk or dirty look. As of today, they can get an officer warning if they loiter in the left lane on roads outside cities. A year from today, they may draw a fine. Is this the most important measure the Legislature passed this year? No. But it puts the law on the side of those who've always taken care to use the left lane sparingly, for passing and left turns.