Please write a behavior problem in green, and write about the traffic in Hangzhou and how to create a better traffic environment for G20.

The increase of private cars has brought more and more serious air pollution and traffic jams to our city, especially during rush hours.

So I think it's time to advocate green travel. In my opinion, first of all, we'd better not travel by car unless necessary. Secondly, people should be encouraged to choose public transport. They can take the bus or light rail. They can even go by subway. These modes of travel can save energy and reduce air pollution. They can also improve traffic conditions. Thirdly, if we don't go far away, we should choose to walk or ride a bike. Walking or cycling provides us with an opportunity to be stronger and healthier.

In a word, I believe that if we all choose green travel, we can improve the environment and traffic conditions.