In August, I built a subway under my LEGO shelf city, and I loved it! After reading many comments with tons of helpful suggestions, I've made a handful of changes and upgrades that have really brought this subway to the next level! These upgrades include elevators, automation, and fully realized subway platforms. I also give a tutorial on how to use a color sensor for your own LEGO trains.
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0:00 Introduction
0:18 Expanding the city
1:23 Elevators
2:49 Platforms
3:43 Lighting
4:08 Color Sensor Tutorial
8:26 Grand tour