Last week I was coming back from southern Mississippi to St.Louis. I noticed something that I never noticed before. I passed about 15 trucks on I55 through Mississippi and about 5 of them let me know if was safe to come back in. I passed 6 4 wheelers and 3 of them flashed there lights to let me know it was safe to come back in. Is this right that the percetage of 4 wheelers were more curtious than my fellow truckers. Or did I just hit this strech of I55 at the wrong time and my fellow truckers where having a bad day and not feeling very curtious.