Snowmobile is an activity where you are often exposed to danger. Your first ennemy is cold . By the way, scarves are prohibited on the trails. Several deadly accidents were caused by scarves getting entangled in tree branches. Your next ennemy is speed .
Modern snowmobiles are very powerful and can reach high speeds.
Most of the trails are not suited to such speeds. Nature will also expose you to some dangers. For instance, you can encounter ice or slush during lake and river crossings. Therefore you should drive cautiously. Finally, like for any other motorized sports, alcoholic beverages and driving don't go together.