Many users of the Live For Speed Beta Demo (available from our Live For Speed download section) often complain about the lack of ettiquete, or of the "dirty racing" they experience ingame.
However, help is at hand! Forum member, TuffCheez and some friends have created the "Clean Racers Club", where they use passworded servers where only clean and fast players play. If you are interested, you should check out their site here. Don't forget to pass by our LFS Forums.