The provided pie charts illustrate the primary modes of transportation utilized by individuals commuting to a university in the years 2004 and 2009.
Overall, there has been a notable shift in the transportation preferences of students over the five-year period, with significant increases in bus and bicycle usage, while car usage exhibited a substantial decline.
In 2004, the predominant mode of transport was by car, accounting for 51% of the total commuting methods. This was followed by bus travel, which constituted 33%, and a mere 9% of individuals opted for bicycles. Furthermore, walking and train services represented 4% and 3%, respectively. This data highlights a reliance on personal vehicles and public buses during this period.
Conversely, by 2009, the transportation landscape demonstrated a shift in preferences. The percentage of car users plummeted to 28%, while bus usage surged to 46%, indicating a growing inclination towards public transport. Additionally, the percentage of cyclists increased to 16%, and walking saw a slight rise to 6%. Train usage remained relatively stable, at 4%. These changes suggest a move towards more sustainable modes of transportation among students.