Originally Posted by
Polaris OBark
It wasn't at all narrow, and even had a dividing line down the middle. It was most likely directed at me, not the followers.
No, it absolutely, positively was not directed at you - as mentioned, this is an exceedingly common practice. People cross over the line all of the time and groups, especially, tend to sprawl over them; "bike up!" was the lead rider's warning to riders behind them to move out of your way, if they weren't already.