Route 5 (Chinese: 五號幹綫) is a route artery in Hong Kong from eastern to western Kowloon and New Kowloon, and ends in Tsuen Wan in the New Territories, linking Route 9. Part one of the road begins in the east from Kowloon Bay westwards via central Kowloon to Yau Ma Tei. From Yau Ma Tei the road heads north to Tsuen Wan and meets with Route 9 (Hong Kong). In the Tai Kok Tsui section of the Route 5 the two lanes are separated. Route 5 is one of the most seriously congested routes in Kowloon as it serves as an interchange to the Hung Hom Cross Harbour Tunnel, especially during peak hours.