Signaling to pull a mine train trolley - GIF

Signaling to pull a mine train trolley.

<video controls autoplay loop style="max-width: 100%;">
<source src="https://diqn32j8nouaz.cloudfront.net/tooltalk_1738373689887.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>


Previously:

Evolution of railway signaling - video
Trafficator car signaling device - photos

It looks like the two spikes on the back will dig in and stop it if it rolls back due to a oh s**t!

If that cable snaps the winch operator is toast!