Railway track alignment.
<video controls autoplay loop>
<source src="https://diqn32j8nouaz.cloudfront.net/tooltalk_17161882306239.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>
Previously:
Continuous railroad track installation - GIF
Excavator that rides on railroad tracks - video
Railroad track laying machine - GIF
Railroad track thermite welding - video
