The provided graph illustrates the amounts of commodities transported in the United Kingdom by four types of transportation from 1974 to 2000. And it is measured by million tones .
overall, it can be seen that three transportation mode such as road, water and pipeline showed an upward trend, while transportation by rail went through a number of fluctuations.
To begin with, in 1974, road delivery started at about 70 tons. Then it increased gradually over the period and reached at almost 98 tons.Road transportation was the highest over the whole period. however, transportation by water was nearly 40 tons in 1974. After 1978 it rose significantly and stood at approximately 58 tons. From 1982 to 1994 water transportation was almost the same. By 2002 it reached at 62 tons.
0n the other hand, rail delivery experienced a significant fluctuations. It began with 40 tons in 1974 and remained the same by 2000 after some ups and downs. In addition to this, pipeline transportation followed a dramatic increased from 1974 to 1982. But from 1990 it slowly decreased over the rest of the period.
