汀九
Next, it goes along the south shore of the Western New Territories, via Yau Kom Tau, Ting Kau, Sham Tseng, Tsing Lung Tau, Tai Lam, Siu Lam and So Kwun Wat and then reaches the Tuen Mun New Town, which was also known as Castle Peak (after which the road was named). Much of this stretch was bypassed by Tuen Mun Road between 1977 and 1983.