London has world’s worst traffic jams As traffic starts to recover from lockdowns, London has emerged as the most congested city globally. In 2021, commuters in the UK capital spent 148 hours stuck in a jam LONDON UK 148 PARIS France 140 BRUSSELS Belgium 134 MOSCOW Russia 108 NEW YORK U.S. 102 Congestion Impact Ranking (hours lost/year) Source: 2021 INRIX Global Traffic Scorecard Picture: Getty Images © GRAPHIC NEWS