When riding in a group, there are a few guidelines you should know.
Snowmobiles should ride single file and not side-by-side. Some trails are not wide enough for two snowmobiles. This will also help when there is two-way traffic on a snowmobile trail.
Follow the snowmobile in front of you at a safe distance that would allow you to stop or slow down in a safe manner. A good rule to follow is the 3 second rule:
When the person in front of you passes an object, note where it is and start counting. By the time you arrive at the same object, you should have counted no less than three seconds. If you counted to less than three, you need to allow more space between the riders in front of you to ensure time to stop safely.