the pie chart is showing how the traffic congesition changed by five different perpose in two cities.
Overall it can be said that private car use was the most common at city A but poor public trasport become the most effected reason of traffic congesion in city B.
According to the chart, the percentage of private car was 45% in city A compared to 30% of city b. another significant cause is poor public transport which registered 25% in city A which incresed to 35% in city B. the proportion of accident and other reasons increase the same 5% in city B. There was a minimal decrease in roadworks which was 15% and it fall down to 10% in city A.
Over the anlysis of this chart the big difference is in two sectores those are poor public transport and private car use in those two cities.
