I really like this bollinger band indicator, maybe even many traders have used the bollinger band indicator as a reference ... where this indicator has an upper, middle and lower line which is usually read as a limit of price movements on a currency pair
What's often overlooked is that Bollinger Bands not only provide boundaries but also volatility information. When the bands widen, the market is typically entering an aggressive movement phase, a strong trend, or a breakout. When the bands narrow, the market is consolidating, and traders should be wary of the potential for another price explosion.
