@bobjonkman asks, in regards to group communication:

Q2. Does anyone use whistle codes? The sweep can whistle twice to get the leader to slow down (spreading out too far is the most common problem I see on group rides), maybe three times for a full stop.

Are there standardized whistle codes for this kind of thing?

(Or are there other nonverbal auditory codes for this?)

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@ascentale @bobjonkman @bikenite A2. I don't, but am also pretty new to group rides. I do use whistle commands for the dogs (only one really works...), so I could see a quick whistle code for group rides being useful.

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