The graph illustrates the means of transport used by working commuters in a specific European city during three different years: 1960, 1980 and 2000.
Overall, while the use of cars to travel to and from work has increased progressively, an opposite path was recorded both for the use of bikes and for those who decided to walk. Buses registered fluctuating percentages.
Starting with a percentage of 5% of the total travellers, cars where the last used mode of transport to reach the workplace or to go back home from it in 1960, used 5 times less than bikes, and more than 6 times less than those who walked. Nonetheless, the percentages of car users increased drastically reaching about 20% in 1980, and topping the chart in 2000 with a rate of 35%. Conversely, the percentages of bike users and of pedestrians decreased steadily, both reaching their lowest in 2000, with a rate of 5% for bikes, and one of about 9% for walkers.
On the other hand, a less stable path was analysed for the percentages of bus users. Buses started with a percentage of about 17% in 1960, and they reached the top in 1980 being the most used mean of transport with a rate of 25%. Afterwards they saw a decrease in 2000, detaining 15% of the total travellers.