Pop of a cork.

Pop of a cork.

With a 30-second exposure, we can observe the UT 111.09 departing from Plaza Cataluña serving an L7 towards Avenida Tibidabo, while its adjacent lane is taken by a companion serving an L6 coming from Reina Elisenda.

A not-so-instant snapshot, nor particularly common.

Estación Plaza Catalunya de FGC