Air pollution in cities is a major environmental problem. Yet many car journeys in cities could easily be made by bicycle - IF the cycling infrastructure was good enough. In Copenhagen 36 per cent of the population commute to school or work by bicycle.

Under a programme to make Copenhagen the world's best city for cycling, more and wider bicycle lanes are being built, as are dedicated car-free bridges across the river.

Joyce Ohajah visits Copenhagen to see what it is like to travel in a city built for bicycles, and experience Bicycle Rush Hour, when more than 35,000 cyclists cross the Dronning Louises Bridge on what is the busiest bicycle street in the western world.

Source: Al Jazeera