Urban Road Act Article 13
When urban roads having a width of less than 15 meters are improved, they shall be paved to the full width at one time.
中文原文 市區道路條例第13條
市區道路改善加舖路面時，其寬度在十五公尺以內者，應一次全寬鋪設。
English translation for reference only; the Chinese text prevails. Not legal advice.