Roller coasters usually have multiple trains flying through the circuit at once. But what keeps these trains from coming into contact with each other? The more cars on the ride at one time, the more chance of them colliding, right? Fortunately, roller coasters feature comprehensive systems to prevent this from happening in the form of block sections, more commonly referred to as blocks. But what are block sections, how can I spot them, and why does the roller coaster at my favourite theme park need them?

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Thanks to reddit user DjTrailer for the photo of Fury 325 used in the thumbnail!

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