In some countries in the last twenty years the amount of freight traffic carried by roads has increased and the amount carried by railways has decreased.
Recently, there has been an attempt to reverse this trend.
What could be the most likely reason for this attempt?
1 )
The external benefits of road transport are higher than the external benefits of rail transport.
2 )
The private benefits of road transport are high.
3 )
The private costs of road transport are low.
The social costs of road transport are higher than the social costs of rail transport.
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