San Ysidro is an US border town and near Tijuana (a city of Mexico).
Here is also the final stop of the city trolley.
Travellers can enter Tijuana from here via an overpass which is just 5 meters from the trolley station.
美國邊境，也是輕軌電車的終點站。
車站旁（約五公尺）有個天橋，過了天橋就到了墨西哥的Tijuana市。