[MENTION=281169]rex615[/MENTION] I think you misunderstood. I was advising that if they have a single speed (with a freewheel) that only a front brake is not an option, obviously. That when freewheeling you should either have a rear brake (like dirt bmx) or both front and rear. Obviously both brakes are "redundant" on a fixed gear but plenty of people still do it. I wouldn't exactly call back pedaling or skidding an emergency brake, and I wouldn't call safety redundant. But this is a bit off topic isn't it?