New license rules

Meanwhile, Beijing will beef up its license plate lottery, the city transport commission said.

The number of license plates issued could be halved from Jan 1, as the capital aims to limit the amount of vehicles to 6 million by the end of 2017.

Specific measures are still under discussion, although it is certain that potential buyers required to participate in the license plate lottery will have less of a chance to obtain new purchase permits, authorities said.

To reach the 6 million goal by 2017, vehicle numbers have to hit 5.44 million by the end of this year, with some 18,500 additional vehicles a month, the commission said.

Statistics show the average monthly growth of Beijing's vehicles exceeded 20,000 a month from 2005 to 2010, while 2011 and 2012, when the capital started implementing the license plate lottery, saw an annual growth of 14,600 in 2011 and 18,000 in 2012.

In July the number of additional new vehicles was 22,000.

According to the action plan, the city has to keep the amount of new vehicles to within 560,000 a year from 2014 to 2017, limiting the annual monthly growth to about 11,700, including coaches and freight trucks.

The current quota for new vehicles is 20,000, the commission said.

Since the license plate lottery started in 2011, more than 1.55 million potential buyers have participated in the lottery.

Only one out of 84 has the chance to get a new purchase permit, according to the commission. Many have won plates but not yet used them.

Some experts suggested introducing financial penalties against those wasting vehicle quotas.

Mao Baohua, director of Beijing Jiaotong University's comprehensive transportation research center, said a guarantee deposit to enter the lottery should be forfeited if the option is not exercised.

"It's necessary to guarantee the rights of those who really need a car for getting around," Mao said.

Chen Yanyan, a professor at Beijing University of Technology's Transportation Research Center, suggested residents participate in the lottery as a family unit.

It is necessary to study the number of vehicles in each family, she said.

Ou Guoli, a professor at the School of Economics and Management of Beijing Jiaotong University, suggested an increase of new energy vehicles, which are not restricted by the license plate lottery.

The only thing the government needs to tackle is the support facilities of the new energy vehicles, including the charging and maintenance stations, Ou said.