You have received an Indusi-Emergency Brake Application (Signal-Activated), because you were too fast approaching a Main Signal that was displaying Stop or Proceed at less than 40km/h.

This is the result of the 500Hz-Activation approximately 250m before the Signal checking that the speed is below 65km/h.
Wait until the Train comes to a stand. To Cancel the Emergency Brake Application, press Indusi-Free (Del-Key on Numeric Keypad). Release the Brakes if necessary, return the Throttle back to 0 (mandatory to prevent an accidental movement once the Indusi is reset). Throttle can now be notched up to begin moving again. Release Brakes