The charts below show the world traffic volume measured in pkm
The charts below show the world traffic volume measured in pkm 1bndG
The charts indicate the transformations in the proportions of the traffic density divided into cars, trains, coaches and high-speed vehicles every thirty years from 1990 to 2050.
During the aggregate period, it is aggregated that automobiles constitute the majority of the traffic volume. In contrast, in the same course, the perception of railways appears to be the lowest.
According to the given charts, cars’ usage seems to have the most remarkable figure, with 53% and 43% in 1990 and 2020 respectively. However, its proportion is forecast to witness a downward trend, falling down to 35%. In 2050, the amount of speedy vehicles may overshadow that of the aforementioned ones, with a noticeably higher proportion of 41%.
While railways can see the most significant fall in traffic volume percentage-wise, it is predicted that buses will fare better. The former makes up only 9% out of the total proportion. Then, there will be a stable drop in this factor, either 3% or 2%. The volume of coaches will have the same tendency with that of trains, in 2050 of 20% against 26% in 2020, and 29% in 1990. 
The charts indicate the transformations in the proportions of the traffic density divided into cars, trains, coaches and high-speed vehicles every thirty years from 1990 to 2050.
During the aggregate period, it  
is aggregated
 that automobiles constitute the majority of the traffic volume.  
In contrast
, in the same course, the perception of railways appears to be the lowest.
According to the  
given
 charts, cars’ usage seems to have the most remarkable figure, with 53% and 43% in 1990 and 2020  
respectively
.  
However
, its  
proportion
 is forecast to witness a downward trend, falling down to 35%. In 2050, the amount of speedy vehicles may overshadow that of the aforementioned ones, with a  
noticeably
 higher  
proportion
 of 41%.
While railways can  
see
 the most significant fall in traffic volume percentage-wise, it  
is predicted
 that buses will fare better. The former  
makes
 up  
only
 9% out of the total  
proportion
. Then, there will be a stable drop in this factor, either 3% or 2%. The volume of coaches will have the same tendency with that of trains, in 2050 of 20% against 26% in 2020, and 29% in 1990.