The pie charts below compare the main causes of traffic congestion in two areas, namely City A and City B.
Overall, it is clear that, in City A private car users accounts for the largest proportionof the problem, whereas in City B poor public transportation constitute a similarly significant share.
In City B problems, the greatest proportion of traffic congestion was on public transportation, which represented 35%, while in City A, the share for this category was just 25%. However, in City A the cause of vehicles made up enormous share, at 45%. Meanwhile, the rate of problem on this category in City B was considerably lower, at 35%. The proportion for roadworks, made up 10% in City B, which was remarkably lower than the 15% in City A. In both areas, the terms of cause was on accidents. In City A, this accounted for 10% of the total traffic congestion, while, in City B was noticeably higher, at 15%.
