Sweden's transport authority has warned that temperatures approaching 35 degrees Celsius can cause asphalt to bleed, posing particular danger to motorcyclists on newly laid roads and south-facing slopes. The Swedish Transport Administration said it is inspecting highways but had not yet received reports of bleeding surfaces, after the meteorological institute issued yellow warnings for Stockholm, Jönköping, Karlstad and Örebro where readings above 30°C are expected through Friday.
Some rail lines in Småland and Värmland were closed on 14 July due to the risk of sun kinks — track deformations caused by extreme heat. Authorities said bleeding asphalt is difficult to predict but can be managed by sanding affected surfaces and reducing speed when detected.