The two pie charts compare the percentages of travellers using five traffic methods to commute to a university for work and study in 2004 and 2009. In general, after five years, buses overtook cars to be commuters’ top preference as transport mediums. It is also obvious to see that while the proportion of people travelling by cars decreased significantly from 2004 to 2009, the popularity of other methods marked an upward trend. In 2004, over half of those (51%) travelling to the university used cars as their main mode of transport, making automobiles the most preferred one, followed by bus with 33%. However, the figure for car users experienced a nearly twofold decrease to only 28% in 2009. Witnessing a reverse trend, after a 5-year period, the percentage of bus-based travellers rose by 11%. The trend of preferring buses to cars could be attributed to installing a new bus stop in 2006 and alterations to the car park at the university in 2008.
An upward pattern was observed in the proportions of pedestrians, train passengers, and bicycle riders. Marginally more people chose to travel by train or walked to the university from 2004 to 2009, accounting for insignificant percentages of less than 6% between 2004 and 2009. These means are the least favoured by travellers. However, a more substantial rise, from 9% to 16%, was seen in bicycles. 
The two pie charts compare the percentages of  
travellers
 using five traffic methods to commute to a  
university
 for work and study in 2004 and 2009.  
In general
, after five years, buses overtook  
cars
 to be commuters’ top preference as transport mediums. It is  
also
 obvious to  
see
 that while the proportion of  
people
 travelling by  
cars
 decreased  
significantly
 from 2004 to 2009, the popularity of other methods marked an upward trend. In 2004, over half of those (51%) travelling to the  
university
  used
  cars
 as their main mode of transport, making automobiles the most preferred one, followed by bus with 33%.  
However
, the figure for  
car
 users experienced a  
nearly
 twofold decrease to  
only
 28% in 2009. Witnessing a reverse trend, after a 5-year period, the percentage of bus-based  
travellers
 rose by 11%. The trend of preferring buses to  
cars
 could  
be attributed
 to installing a new bus  
stop
 in 2006 and alterations to the  
car
 park at the  
university
 in 2008.
An upward pattern  
was observed
 in the proportions of pedestrians, train passengers, and bicycle riders.  
Marginally
 more  
people
 chose to travel by train or walked to the  
university
 from 2004 to 2009, accounting for insignificant percentages of less than 6% between 2004 and 2009. These means are the least  
favoured
 by  
travellers
.  
However
, a more substantial rise, from 9% to 16%, was  
seen
 in bicycles.