Diesel Version 5:Crew Alert

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The Crew Alert feature, or sometimes known as a Dead Mans Switch is a safety feature on modern locomotives. While a locomotive is moving the engineer must press a button or pedal every so often to ensure that the engineer has not fallen asleep, lost consciousness, died, or having a medical emergency. If the engineer fails to do so after a set amount of time an alarm and flashing light will activate. If the button is not pressed within a short window then the train goes into emergency stop.

In the WOWSound decoder this is implemented by monitoring for speed changes, function presses, or notch changes (when using the proto-notch) feature. If the time has expired as set by the Crew Alert Timer without a user input then an alarm will sound increasing in volume. After a short amount of time if no further input is received to turn off the alarm the train will enter emergency mode, putting on the brakes and stopping the train.
Additionally a light output can be installed inside the cab, programmed to be a flashing light, and set to be the Crew Alert Light Function so that a light will flash as the alarm sounds.

TCS Crew Alert in action: https://www.facebook.com/tcsdcc/videos/756374644448643/ (@TODO This link may embed the video if the extension is installed:
<video type="facebook">756374644448643|560|340</video>

Crew Alert Prototype history further explained:

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