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

https://emilianonbzy140.novacrestiq.com/posts/keeping-commercial-sliding-gates-running-in-la-with-track-roller-and-safety-checks

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.