China's roads are becoming more chaotic as car ownership becomes the most visible symbol of wealth and upwards mobility in the country. There will soon be the same number of cars in China as in the US, according to the Wall Street Journal. The increase of cars on the roads may signal a booming economy, but has also created a lot of problems. China is already infamous for its days-long traffic jams on 40 lane highways. Smog is also a major challenge. On Monday, Beijing suffered its worst air pollution of the year, according to the Associated Press. Visibility was cut to several hundred meters and the levels of hazardous tiny PM2.5 particles in the air exceeded 600 micrograms per cubic meter. The World Health Organization considers the safe level of PM2.5 particles to be 25 micrograms per cubic meter on a 24-hour average basis.
The Associated Press contributed to this report.