The bar charts illustrate data concerning the railway networks in six different European cities.
At a glance, it is evident that the railway systems vary greatly in size and age across these cities. Moreover, the number of people using these systems also differs significantly.
Focusing on the size of the railway networks, Berlin boasts the largest system, with over 400 kilometers of railway. This is approximately twice the size of the systems in Madrid and Paris, and four times larger than that in Stockholm. Despite having the smallest network, Stockholm's railway system is the oldest, dating back to the 19th century.
In terms of usage, London's railway system is the most heavily used, with around 800 million people utilizing it annually. This is significantly higher than the usage in other cities, with the exception of Paris where the figure is also quite high. Interestingly, despite having the largest network, Berlin's railway system is used by a relatively small number of people annually.
