Sliding gates often fail to open or close because debris blocks the track, wheels slip off the rail

https://donovanjqcf109.trexgame.net/v-track-vs-cantilever-sliding-gates-key-differences-in-maintenance-and-support

Sliding gates often fail to open or close because debris blocks the track, wheels slip off the rail, tracks shift out of line, or the operator needs a reset after an obstruction is cleared.