Relatively rich developed countries like Wales manufacture, consume, import and export a growing quantity of essential and non-essential products.
Rising freight traffic is caused by:

A high proportion of freight is currently moved by road. This causes many problems including:
Road freight, like road traffic, does not fully pay the wider costs it imposes on society and the environment.
Friends of the Earth Cymru supports policies to encourage a shift of road freight to rail and sea.
Image © Ian Homer