Abstract
Snowmobilers injured in Northern Vermont during the 1971-1972 and 1972-1973 seasons were compared with uninjured snowmobilers from the same communities. Lack of familiarity with the machine or the environment was an important factor in injury events. Among injured adults there was an over representation of persons who had been drinking, who tend to be frustrated often and to express this by fighting, and who have an excess of previous snowmobile injuries, highway crashes and traffic citations.