Compared with the other suggested measures, the road space rationing is a better and more civil option. Article 39 of the Road Traffic Safety Law says: "The traffic administrative department of the public security organ may, in light of the specific circumstance of the road and the traffic flow, take such measures against motor vehicles, non-motor vehicles and pedestrians as directing the flow, restricting the passage or prohibiting the passage, etc. If, in the event of a large mass activity or large-scope construction, etc., it is necessary to take measures restricting the traffic, or to make a decision directly relating to the road traffic activities of the public, it shall be announced to the public in advance."

Some experts say the law has given the government the right to regulate traffic according to requirements. Since the law doesn't specify that the government can only take temporary steps to manage traffic, it can take permanent measures such as road space rationing.

Of course, that does not mean Beijing should implement the rule immediately. It is necessary to seek people's opinions because the proposed move involves their rights. This can be done through democratic procedures, including opinion polls, hearings and open public debates, so that everyone gets a chance to voice his/her opinion on the policy.

The author is a writer with China Daily. zhangzhouxiang@chinadaily.com.cn