Why is there no traffic jam in Hong Kong?

The traffic situation in Hong Kong is indeed much better than that of many cities in the mainland. In Hong Kong, the concept of traffic jam is different from that in the Mainland. It usually only means that the traffic flow is heavy and you can only move forward slowly, rather than the "blocked and motionless" in the Mainland. Hong Kong's road design is actually very backward. Due to narrow roads, the number of lanes is limited. Especially in older urban areas on Hong Kong Island, various one-way and two-way single-lane designs are actually one of the causes of congestion. In addition, the Hong Kong government does not encourage private car travel, and taxes and fees are very high. In order to solve the traffic problem, Hong Kong vigorously develops public transportation. Hong Kong's topography happens to be suitable. The core areas are concentrated on Hong Kong Island and Kowloon. The New Territories are divided by mountains. Its urban areas extend in the valley in a belt shape. The traffic flow is single and concentrated. One subway can cover a large area.