Bollinger Bands stops is a trend following indicator. The green line indicates uptrend and red line indicates down trend. When price close above the red line, up trend begins. Buy Positions can be opened immediately or on a pull back to a support level in the new uptrend. The green line can be used as a stop loss. Similarly, when the red line appears, sell positions can be opened immediately or on pullback to resistance with the red line as stop loss. This indicator works best in trending markets, in consolidating markets signals may be not effective.