Originally Posted by
Stadjer
They have had years of practice, also if they're from the countryside. It's not ruled by formal rules (cycling side by side is allowed btw @
cyccommute), it's more like swarm behaviour and overthinking it doesn't help.
Cycling side-by-side is allowed by whom? If there are no formal rules (confirming what I saw in Amsterdam), then anything is allowed. But
informal rules of just plain politeness says that you shouldn’t be riding side-by-side on a narrow path with lots of on-coming traffic or overtaking traffic. It might be okay (but still rude) if there were 10% of that traffic on that path. But on a crowded pathway, simple courtesy would dictate that you ride single file.