The Route 3 (CPS) Company Limited has a 30-year build-operate-transfer franchise that runs to 2025, and is now operating the strategic north-south expressway between Yuen Long and Ting Kau.

The dual three-lane expressway consists of the 3.8-kilometre Tai Lam Tunnel and 6.3-kilometre Tsing Long Highway. It provides a direct link from the Lok Ma Chau crossing and northwest New Territories to the container ports in Kwai Chung, Hong Kong International Airport, Disney theme park and the urban areas. It not only helps alleviate traffic congestion on Tuen Mun Road and the Tolo Highway, but also provides a faster, more convenient link for commuters.