Hard core riders generally have this information tattoo'ed on their foreheads. The unfortunate reality is...many embellish their numbers and so its hard to determine if they should be allowed to join the train. I will tell you what is a bit annoying. When guys on mopeds join the paceline. But even this is nuanced. Electrical mopeds are the best to ride with...no noise or pollution. When riding behind a gas moped isn't healthy for a long ride. Also, if people are yelling, its hard to hear this over the sound of a gas moped.