People seeing a crash in front and panicking or instantly slamming on the brakes can just cause another crash behind them.
IMO watching this video https://twitter.com/dukster777/status/1551571262715084800
She was right behind someone who pulled left, they were going very quick, it looks like she slowed and tried to fit through a gap rather than going straight in to the back of someone else except that gap was actually another cyclist on the floor. I can believe she couldn't see it and probably couldn't even see the big group of cyclist slowing in front as she went behind the other person right as they started slowing. I'd put a lot more blame on the person in front of her who didn't slow down at all and tried to go round the whole group on the left.
People seeing a crash in front and panicking or instantly slamming on the brakes can just cause another crash behind them.
IMO watching this video
https://twitter.com/dukster777/status/1551571262715084800
She was right behind someone who pulled left, they were going very quick, it looks like she slowed and tried to fit through a gap rather than going straight in to the back of someone else except that gap was actually another cyclist on the floor. I can believe she couldn't see it and probably couldn't even see the big group of cyclist slowing in front as she went behind the other person right as they started slowing. I'd put a lot more blame on the person in front of her who didn't slow down at all and tried to go round the whole group on the left.