Hong Kong and the Mainland are closely connected. With well-developed cross-boundary transportation networks and cross-boundary facilities, there are frequent contacts between the two places. Border via land crossings include Lo Wu, Lok Ma Chau Spur Line, Hung Hom, Shenzhen Bay Port, Lok Ma Chau (Huanggang), Sha Tau Kok, Man Kam To, West Kowloon Station and Hong Kong-Zhuhai-Macao Bridge (HZMB) Hong Kong Port.
The Hong Kong Section of the Guangzhou-Shenzhen-Hong Kong Express Rail Link (XRL) connects with the national high-speed rail network and greatly shorten the traveling time between Hong Kong and Shenzhen, Guangzhou, and other cities in the PRD. It consolidates Hong Kong's position as a regional transport hub. The average daily patronage was about 40 000 in the first half of 2023, with the highest number of over 90 000.
Since its commissioning in October 2018, HZMB has brought enormous opportunities for the connectivity within the Greater Bay Area and its overall development. The governments of Guangdong, Hong Kong and Macao have been working closely to take forward various new cross-boundary transport measures having regard to the capacity of relevant boundary control points and the respective connecting roads with a view to increasing the number of vehicles using HZMB in a gradual and orderly manner, including the “Northbound Travel for Hong Kong Vehicles” (the Scheme) which has been implemented since 1 July 2023. Eligible Hong Kong private cars can travel between Guangdong and Hong Kong via the HZMB without the need of obtaining regular quota, thereby providing a convenient way for Hong Kong citizens to self-drive to Guangdong for business, visiting families or sight-seeing on a short-term basis; and these northbound vehicles can also have the customs guarantee-free arrangement.
The Liantang/Heung Yuen Wai Boundary Control Point (LT/HYW BCP) , the seventh land boundary crossing between Hong Kong and Shenzhen with direct access facilities for both passengers and vehicles, is one of the key infrastructure to strengthen the cross-boundary transport connectivity within the Greater Bay Area, which can provide Hong Kong with more room for development, foster the flow of people and goods, and promote economic development and regional co-operation under the "one-hour living circle" in the Greater Bay Area. The Hong Kong and Guangdong governments have agreed to issue quotas of 2 000 and 200 for Hong Kong and Mainland cross-boundary private cars respectively for this BCP.
The Hong Kong Section of the XRL, HZMB, and LT/HYW BCP will further enhance the capacity of Hong Kong boundary crossing facilities in meeting the ever increasing cross-boundary passenger traffic. Together with transport infrastructure connecting both sides of the Pearl River, such as the Nansha Bridge and Shenzhen-Zhongshan Bridge, they will further improve transport connectivity within the Greater Bay Area and create favourable conditions for attracting Mainland and overseas talents to the Greater Bay Area.
