三
Supplementary Provisions, Article 69, paragraph (1), item (iii)
工作物の建設の事業に関連する警備の事業（当該事業において労働者に交通誘導警備の業務を行わせる場合に限る。）
a security business related to a business of constructing structures (limited to the case where workers are made to perform traffic guidance security work in that business)