As of January 1st, 2020, a new traffic restriction was imposed in Barcelona: The Low Emissions Zone, or ZBE. However, since January 1st is a national holiday, the ZBE became active on January 2nd, 2020.
Don’t worry, the first few months are to let you get accustomed to the ZBE and, as such, vehicles that enter the ZBE will not receive a fine, but an informative letter. As of April 1st, 2020, they will begin to fine drivers for entering the ZBE. The amount of the fine for entering the ZBE will range from 100€ to 1,800€.
The Low Emissions Zone covers the city of Barcelona (except for the Industrial Zone, the Vallvidrera neighborhood, Tibadabo, and les Planes), as well as L'Hospitalet de Llobregat, Sant Adrià del Besòs, part of Esplugues de Llobregat, and Cornellà de Llobregat. On holidays, however, the ZBE only extends to the city of Barcelona.
The ZBE is active from Monday through Friday from 7:00 a.m. until 8:00 p.m.