The city of Mango has several bus companies. During the last years the frequency
of bus accidents has gone up significantly. This has caused much delay and
inconvenience for the passengers. There have also been several serious accidents
in which passengers have been killed. The newspapers have taken a particular
interest in the problem, and some of the companies that have had more than their
share of bad publicity have registered a reduction in the number of passengers.
Much of the problem is technical: the buses are old, and are in bad condition
because of a persistent lack of spare parts. But the human factor is also important:
many accidents have been caused by high-speed driving on bad roads.