22610 Brake module BM2The BM2 module uses ABC braking to stop trains in front of a signal. When the signal is green the train will drive through. When the signal is red the train will slow to a stop based on its decoder inertia settings. You can also wire in a slow approach function if the signal shows an amber caution then the train will slow down to a speed set in the decoder until it leaves the section and picks up speed.