SUBWAY
One of the biggest concerns with traffic in Beijing is its apparently ubiquitous traffic jams. Therefore, many have claimed that the subway is best way to get around Beijing. In 2008, Beijing's subway system was comprised of seven lines. It will have some new additions this year.
The subway goes to most of the important sites in Beijing, including the Tiananmen Square. During rush hour, the metro is always packed with commuters. But it's still a good option to escape the traffic snarls of the city.