London Saw A Surprising Benefit To Fining High-Polluting Cars
Restricting the volume of high-emitting vehicles roaming city streets carries many benefits, from clearing the air to quieting the urban din and beyond. Recognition of this simple fact has led to the proliferation of clean air zones, designated regions within a city where vehicles must meet strict pollution standards or pay a fee to operate within it. At last count, over 300 such areas had been established across Europe. In London, which boasts the largest ultra-low emissions zone in the world, a study has found a secondary benefit: Kids started walking and biking to school more.
In 2018 — the year before London’s rule took effect in the center of the city, and five years before the zone encompassed its entirety — researchers at the University of Cambridge and Queen Mary University saw in the impending policy an opportunity to conduct a natural experiment.