Countersteering: This is how bicycles steer at high speeds (period). If you don’t have a full appreciation for what’s going on under you as you “lean into turns” and how “leaning” controls how your bike steers you could find yourself in a world of hurt if you enter a turn too fast or too low and need to tighten up your turning arc to avoid running into other riders, out of your lane, off the road, or worst of all into oncoming traffic. When you are traveling at a high rate of speed on a two-wheeled cycle you turn by countersteering, that is to say you turn the front wheel left to go right and right to go left. However, it’s done instinctively and most cyclists only recognize the act of countersteering as “leaning the bike into a turn”. At high speeds, to tighten up the arc of your turn you MUST lean the bike deeper into the corner and to straighten the bike up or change its direction you must stand the bike up (by turning into the lean – yes, it’s true), and then “lean” the bike in the opposite direction. If done passively or by instinct, you can manage most fast descents with some semi-challenging turns. However, as you get into the very high speeds with high speed corners countersteering needs to be actively managed to maintain control of the bike. For example, if you find yourself in a blind corner that you assumed was a 90 degree turn that would end just out of view but, instead, found that it was a 180 degree with a decreasing radius, you would have to lean your bike far deeper into to the turn to stay within your lane or on the road. To do anything else, i.e., apply brakes or “steer” into the turn would either cause your bike to stand-up and go straight or perhaps slide out from under you. In either case, you would most likely leave the relatively safety of your traffic lane.