The two pie charts illustrate the six dufferent methods of transportation(including car, bicycle, bus, train and walking) through which individuals travelled to an unknown university between 2004 and 2009.
Overall, the main ways to transport were by bus and car.However, other means of travelling are significantly less popular.
Regarding the year 2004, one noticeable feature is that half of the people travelled by cars. The second most popular method was to travel byu bus, which comprised of one-forth(33%). Moreover, other means of travelling were less popular including bicycles,walking and train which consisted of 9%,4% and 3% respectively.
Regarding the year 2009, management applied car parking charges in 2006 and added new bus stops in the university in 2008, effects of these can be seen as usage of car decreased abrubtly to 28% , while the bus became main source of travelling by 48%. In contrast, use of bicycles was relatively increased to 16% in this year. Nonetheless, other methods consisted of merely 10%.