I've been having a little trouble with this one. Since retiring, I've been trying more group rides and it seems like groups are much more likely to ignore them than individuals.
As a solo, when I come upon another solo, they generally are pretty concientious about compliance.
Groups seem to have a tendency to plow through whatever the 'offending' sign or signal is.
Seems like the faster the average speed, the more likely they'll proceed without even a slowdown. Granted, many times there is no opposing traffic for the leaders but the trailers seem to be at risk.
Is there a common protocol about how many riders can use the lead 'look and go' before someone else should slow down and observe?
I know there's this trust thing that can get in the way of good judgement on occasion.