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The given graph is a statistical representation of the things transported in the UK between 1974 and 2002 by four different modes of transport in million tonnes.
Overall, the road transportation has shown a steady increase, whereas the railway had fluctuations in its capacity of carrying goods. On the other hand, both water and pipeline have almost equal graphical representation with difference in the amount of goods they carry.
Although both pipeline and water transportation started from different quantities in 1974 which was 0 and 40 million tonnes respectively, still both of them rapidly increased till 1982 and from 1982 to 1990 pipeline goods carrying capacity remained constant. Simultaneously, the water route was also carrying the same amount till 1994. After 1990, the quantity slightly decreased via pipe and then again remained constant. On the other hand, water transport too showed a downward trend but then suddenly increased after 1998.
Considering the other two modes of transportation, road and rail. Although the road was already in heavy use carrying more than 60 tonnes in 1974, still the amount of goods transported by road was increasing every year with slight decrease in between and by the year 2002 the carrying quantity of things was touching 100 million tonnes. With all the fluctuations in railway goods capacity, in 2002 it remained there from where it had started.
