As you can see from the charts above, point A should be the 61.8% retracement of drive 1. Similarly, point B should be the 0.618 retracement of drive 2. Then, drive 2 should be the 1.272 extension of correction A and drive 3 should be the 1.272 extension of correction B. By the time the whole three-drive pattern is complete, that’s when you can pull the trigger on your long or short trade. Typically, when the price reaches point B, you can already set your short or long orders at the 1.272 extension so that you won’t miss out! But first, it’d be better to check if these rules also hold true: The time it takes the price to complete drive 2 should be equal to the time it takes to complete drive 3. Also, the time to complete retracements A and B should be equal.