警務人員和交通督導員以外，獲授權發出交通信號而其信號必須迅速服從的人士，例如隧道區或管制區的獲授權人士。
A person other than a police officer or traffic warden who is authorised to give traffic signals that must be promptly obeyed, such as authorised personnel at a tunnel area or control area.
警務人員和交通督導員以外，獲授權發出交通信號而其信號必須迅速服從的人士，例如隧道區或管制區的獲授權人士。
A person other than a police officer or traffic warden who is authorised to give traffic signals that must be promptly obeyed, such as authorised personnel at a tunnel area or control area.