The transportation infrastructure facilities and interconnections of the Guangdong-Hong Kong-Macao Greater Bay Area have witnessed tremendous progress over the past decade, the National Development and Reform Commission said at a news conference on Sept. 26.

The GBA has formed a one-hour transportation circle between Guangdong province and the Hong Kong and Macao special administrative regions. Moreover, the acceleration of the development of the regional track transportation system has also promoted the construction of city clusters, the NDRC said.