The first path is initially down, but an invisible trigger which activates on the 2nd lap before the finish line activates the blocker for the max, 10 seconds, so everytime someone passes, it goes up.
The second is initially up, but an invisible trigger at the same spot as the first only works on the second lap and goes down for 10 seconds. To block that path on the third lap, add a second layer of blockers which only go up on the third lap for 10 seconds with an invisible trigger at the same spot at the previous two.
The third is identical to the second, but on the third lap and no need for a second layer of blockers.
Of course, this isn't 100% safe, if someone passes the blockers when they're going down after 10 seconds... or lag.
You can lower the time if you want.
I hope this helps!
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Or they all cry in unison.
dode i leke punktuation
