Ranking the most congested cities and the worst traffic bottlenecks in Europe

How bad is traffic? Where are the worst places and the worst times to drive? London or Paris? On the M25 or the A9? Monday morning or Friday evening? How does UK traffic compare to France or Germany? With increasing amounts of raw data and information technology power, traffic data experts are starting to address these issues. However, no report has gone to the specific roadway level at all times of the day across several European countries in a consistent fashion – until now.