Built in 1977 , it was once the major trunk route linking the northwest New Territories to urban Kowloon .
Built in 1977 , it is known for its frequent traffic jams and road accidents owing to its early design and heavy usage .
Built in 1977 , it was once the major trunk route linking the northwest New Territories to urban Kowloon and is known for its frequent traffic jams and road accidents owing to its early design and heavy usage .