La area of low emissions in the area of the rounds of Barcelona (ZBE Rondes de Barcelona) is an area of more than 95 km2 where is restricts the movement of the most polluting vehicles with the aim of protecting the atmosphere, human health and the environment. This area includes the entire municipality of Barcelona (except the Zona Franca and the neighborhood of Vallvidrera, Tibidabo and Les Planes), the municipality of L'Hospitalet de Llobregat and part of the municipalities of Cornellà de Llobregat, Esplugues de Llobregat and Sant Adrià of Besòs.
From 1 January 2020, traffic restrictions will be permanent and the ZBE Rondes de Barcelona will be effective from Monday to Friday, from 7.00 am to 20.00 pm.