Traffic congestion is a serious problem. According to a recent study conducted by INRIX Europe, Belgium is the worst country in Europe for congestion, with motorists spending 55 hours a year in traffic jams, followed by Holland (50 hours) and Italy (29 hours). It is estimated that by 2050 the world's roads could see 4 billion vehicles: four times today's figure.
How to tackle the problem of traffic congestion was recently discussed at the Intelligent Transport Systems World Conference in Vienna, which was organised by the European Commission. One topic was how to avoid a global gridlock (in response to the news of a traffic jam in China, which lasted 11 days).