The graph demonstrates information about the amount of products transported by six different ways of transport in USA from 1990 to 2040. The overall of chart is showing the number of goods tranfering through the road, water, railway, air, pipelines and cable. The number of transportation is increasing overtime.
Firstly, The major parts is tranfering by the road as the 35 tons is tranfering 1990. the rood is significantly growing trends,however there is slightly drop in 1995 and then the road is always all time high for transpertation.
Secondly, The number of goods transfering by the water and railway is similar in first 4 decades. After 2030 railway is moving forward to over 30 millions while the water transportaion is steadily in 20 millions tons. As in the graph, using railway for transporting goods is slightly increasing from fiftheen in 1990 to over thirty millions in 2040
The minor part of transpertaion around 5 -10 millions of each are air , pipeline and cable. they are sideway growing around this period comparing to other transportation.
To conclusion, the number of tranporting goods is increasing overtime. The main parts of transportation is using road while other mode is not more than half of road tranportation.