Essen, North Rhine-Westphalia, Germany, A40 motorway in the city centre at dusk. Underground line U18 on the way to Berliner Platz stops at Savignystrasse underground station. On the right, residential buildings behind a noise barrier. A LANUV air monitoring station, Essen Kruppstrasse 117 (EKRU2), is located on the wall on the right under the lantern. Residents are affected by noise and exhaust fumes. At the back, buildings with Postbank, Eon and Evonik lettering. Moon in the sky, Europe