For one, the benefits of establishment a congestion charge are numerous. Take the China as an example, government have solved the traffic problem specially in central parts of the city by legislating a new law in this case. As this example shows, encouraging invasion of tremendous number of people to live in city can disrupt the quality of transportation system as well as flourish traffic congestion. Thus, the effectiveness and merit of this plausible alternative solution is clear.
In addition to this, there is an abundance of evidence that this position is further exemplified looking at how banning the entrance of cars to city centers can play a vital important role to overcome traffic and transportation problem. For instance, while living in Japan in 2012, government encouraged people to live in cities instead of suburb area in an attempt to solve traffic congestion, but the potential problem of this strategy did greatly outweigh the possible effect. It is one of the main reason, if government had banned the entrance of cars to crowded parts of the city, both city dwellers and visitors of metropolis would have had less cramped street. Thus, the feasibility of this alternative suggestion in an effort to curb the traffic problem is clear.
Therefore, following the above analysation it can be concluded both introducing congestion charge and restricting the access of cars to city centers would be more effective than encouraging citizens to live in cities. I thus hope this phenomenon gain support and put into practice in all countries in the forseeable future.