Replacing a photocells wire under the driveway
It is very common issue on both sliding and swing gate. Photocells transmitter that installed across the driveway needs a power feed. Sometimes installers use a gap between the concrete slabs or caution a new gap cable size and run the cable in sealed on top. After a year the cable, even special underground one, can be damaged by moving concrete slubs. To avoid it better cut the gap a bit wider , so you can run a wire in a conduit.