This is a documented version of the Bridge Bands indicator published by @calebsandfort under the Mozilla Public License. My 'enhancement' here is simply to add documentation to the code to assist new users in their understanding.
Bridge Bands are an implementation of the work done by Joe Catanzaro (joecat808) to produce a risk range for a security. The basic idea is to calculate Mandelbrot's "Bridge Range". (Pg. 179 of Misbehavior of Markets) It then calculates Bollinger Bands. Then next step is to calculate the Hurst Exponent. The last step is to merge the Bridge Range and the...
This indictor creates daily Risk Ranges using historical volatility, volatility skew and vol-of-vol.