ABSTRACT
The imperfect market structures of monopoly and oligopoly and their high prevalence in
transport markets
The main sources of barriers to entry into transport markets
The disadvantages and advantages of imperfect markets in the provision of transport
services
The tendency for competitive transport markets to veer towards imperfect market struc-
tures through company mergers and acquisitions
One perspective of the process of competition and how industry structure may change
and evolve over time.
