For my two cents worth-
It does not seem that all the gates are the same. As far as people hitting the arms, there are at least two problems. Depending on the light, they are often hard to see. Gates are often at golf cart crossings. So you need to deal with the gates and golf cart drivers.
I can think of one we regularly cross where you have both mentioned issues plus an attendant who nicely wishes you a good day as you are wrestling with your card, being close enough to the sensor, golf carts, other cars, walkers, bicycles, and light.
Repair of hit arms????? I've never hit one. But they seem to just snap back in. They seem to make a production over nothing.
Having it fold back, that would surely damage your car or golf cart.
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