The functional design, which is similar to that of the Channel Tunnel, allows for the interconnection of the two countries' railway networks and, in addition, the crossing of road vehicles on shuttle trains running between two terminal stations, one in Spain and the other in Morocco.
这一功能设计类似欧洲隧道，一方面可把两国的铁路网连接起来，另一方面可用穿梭火车在位于西班牙和摩洛哥的两个终点站之间运输汽车。