2021/commendation Nagoya 2nd Ring Expressway ‖ Nagoya Nishi JCT-Tobishima JCT sign construction 15/12/2021 by 信号器材株式会社
2021/commendation New Tomei Expressway ‖ Gotemba IC-Gotemba JCT sign construction 1/10/2021 by 信号器材株式会社
2021/commendation Nagoya Second Ring Expressway ‖ Southwest Construction Project 31/8/2021 by 信号器材株式会社
2021/commendation Maintenance and repair work in the Hachioji area ‖ Chuo Expressway 23/6/2021 by 信号器材株式会社
