My topic is 'The traffic congestion in Hangzhou'. My recent experience on road in Hangzhou inspires me to come up with such a topic. On weekends, I tend to visit city centre and do some shopping. However the traffic condition is always awful on those main roads especially during peak hours, such as the evening on Friday and Saturday. This is very annoying, since I have to spend at least half an hour on road to get to city centre not to mention the time for searching parking area. So I choose to take public transportation like buses. Yet It seems that buses can not get any faster on those packed roads. Thus, It want to do some research on Hangzhou's traffic congestion, and try to work out some solutions for current situation.