I notice a lot of young truck drivers recklessly changing lanes without signals, speeding, and acting like they're driving on the grand prix.  Thoughtless, unaccountable drivers who don't realize the magnitude and seriousness of accidents they can cause due to their carelessness.  Also, please drive with aloha and courtesy...they show none when 3 of them are taking 1 lane each..all moving at the same speed for miles.