Translation:One person disembarked at this stop.
Yes. In this context, "disembark" is incorrect, in my opinion. The root is "bark" or "barque" meaning a ship. The primary meaning of "to disembark" is "to go ashore from a ship." That meaning has been extended to airplanes (airships, airliners) and could be extended to spaceships. It is inappropriate for bus, tram, or trolley stops.