I just learned this last year. Ill never ride towards the front or middle of a group ride again where I dont know everyone. Its bad enough youre riding on a two way road at a hot pace, but combined with trying to pass is a bitch and would hate to see any of the guys I ride with go down like last year. Im spending less time on the streets and more at the track this season bc of this. This is why I ride with NinjaNick...makes me look like Rossi