I've studied reversals. The best indicators, I found, is counting the number of moving averages the candles crosses. I define a crossing when a candle opens and closes entirely on the other side of the moving average after it crossed.
To add, if a moving average price is relatively a horizontal line, the probability of this reversal signal increases. Another thing, if the price crosses a large moving average, the chances of the price not returning to it for the near term increases.
For example, once a stock price crosses a trending 200ma, this stock price will probably not cross the 200ma again in the near term. If the 200ma is trending upwards, the price of the stock will stay mostly above the it throughout the day. If the 200ma is trending downwards, the price of the stock will stay mostly below the 200ma throughout the day. However, If the 200ma is a relatively a horizontal lines during the crossing, there is a high probability of a reversals occurring soon.
If you combine these two signals with price patterns, you can anticipate an early entry before the reversal occurs. For example, ESRX's 11:19 candle opened and closed after it crossed the 9 ema. Then the 11:20 candle also opened and closed after crossing the 20 ema. During the crossing, the 9 ema and 20 ema were almost horizontal. Before the price crossed the moving average, the engulfing price pattern occurred first at 10:15.
This is where trading price patterns works best, but also remember to keep track of the trend.
Final words, Like every trading signal, they are not prefect. The signals I've described above may increase your chances of detecting reversals, or at least a pull back.