Momentum Traffic Light

Script was first published 30 May 2021 on twitter by lehlutz
This script visualizes long, short and neutral phases of any asset class as follows:
The differences A, B, C are formed from 3 moving averages
(3-EMA exponential moving average, 20-SMA simple moving average and 50-SMA simple moving average)
namely
A: (3-EMA minus 20-SMA)
B: (3-EMA minus 50-SMA)
C: (20-SMA minus 50-SMA).
Then the following rules apply to the traffic light (where ∂ means slope).
green traffic light (bullish): (A>0,B>0,C>0), (A>0,B>0,∂C>0), (A>0,∂B>0,C>0) or (A>0,∂B>0,∂C>0, whereas ∂A>0)
red traffic light (bearish): (A<0,B<0,C<0, whereas at least ∂A or ∂B or ∂C is <0) or (A<0,B<0,∂C<0 whereas ∂A and ∂B<0);
yellow traffic light (neutral): all other

Indicator should not be considered as financial advice