@skyfaller asks:
Q3. What communications systems do people use for talking with other bicyclists while riding?
We used these Bluetooth helmet "radios" by Sena, and they were extremely helpful on long rides where we couldn't bike side by side, such as when we moved house by bike. But these were mediocre helmets, if either the Bluetooth or helmet dies you must replace both, and annoyingly you had to pair the helmets every time.
@ascentale @skyfaller @bikenite A3. Some larger group rides I've been on - especially Critical Mass rides that are on major streets - have used Walkie Talkies for the leader to communicate with the sweepers, and vice-versa.
Other than that, most of the time it's just "yell loud enough to be heard."
But if you've got good balance, you could have a one-way conversation with cyclists behind you using semaphore. Or ring your bell for Morse code...
Phil (ascentale)
Ryan
cognitively accessible math