The first stage of the metro under Prague was completed in 1974 and today it has three lines and carries over 500 million passengers a year.
In the early 1960s the concept of the sub-surface tramway was accepted and building of the first station (Hlavni nadrazi) started in 1967. However the Soviet Union suggested a fully functioning metro system might be a better solution than an underground tramway.
Regular services of the first section of line C began operating in May 1974 between Florenc and Kacerov stations.
In 1978 the first section of line A was opened and, finally, line B opened in 1985, thus forming a triangle with three crossing points.
Every few subsequent years the tracks are extended further from the center and there are now plans for a forth line.
