VRAI ( Risk Avoidance Indicator) shows Pressure, so that you can avoid volume-based risks.
For example, never short when you see green (buying pressure). Never long when you see red (selling pressure).
You still need to pick good price patterns, because the crossover of pressure is not reliable.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.