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Welcome back, JeffTheMiner1 here. Today I've got a traffic light. So, as you can see, it
turns green, and then it will go yellow, red, and then this set will go green, and it just
keeps doing that. So, it might be simple, but it takes some some redstone. All of these
command blocks are all /setblock commands. So, each one is in a group of 8, and they
control 4 traffic lights. So here, for example this would turn the lights green when the
redstone current goes there, while the lights here on the opposite set turn red. The reason
why there is 8 instead of 4 in each group is because it turns the previous light (which
are just blocks) into the coal. And this is the same, but with opposite sets of lights.
So, thanks for watching.